Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Backup A-15 1 Solenoid - Down Shift A-14 31
Alarm - Engine Overspeed E-8 F Solenoid - Start Aid B-2 23
Alarm - Fault (EMS) C-2 G Solenoid - Lockup A-13 31
Alternator B-7 2 Solenoid - Lube D-15 E
Batteries A-2 3 Solenoid - Proportional B-14 28
Breakers - Circuit E-14, F15 D Solenoid - Shutter A-9 36
Control - Autolube E-8 C Solenoid - Steering Bleed A-11 35
Control - Automatic Retarder F-2 E Solenoid - Up Shift A-14 31
Control - Engine A-5 2 Speedometer C-4 B
Control - Neutral/Start F-6 C Switch - A/C Press B-9 29
Control - Payload Monitor D-13 E Switch - Aftercooler Temp (EMS) B-5 37
Control - Start Aid B-2 23 Switch - Backup Alarm D-8 C
Control - Steering Action C-13 C Switch - Backup Lamp D-8 C
Control - Traction Aid D-13 E Switch - Bed Raise (Trans) D-l 2 D
Control - Transmission F-7 E Switch - Blower C-5 A
Control Steering Bleed E-9 C Switch - Body Down (Trans) A-12 16
Converter - 24/12 Volt C-15 E
Switch - Brake Master Cyl Overstroke
(EMS)
A-12 38
Distributor - Transmission Speed E-9 G
Switch - Brake Master Cyl Overstroke
(EMS)
A-12 39
Dryer - Air B-14 4
Switch - Brake Master Cyl Overstroke
(EMS)
A-11 39
Flasher F-5 C Switch - Brake Oil Temp (EMS) B-12 18
Fuses D-15 D Switch - Brake Retract D-8 G
Gauge - Brake Oil Temp D-5 B Switch - Brake System Air Press (EMS) C-14 E
Gauge - Engine Coolant Temp D-5 B Switch - Converter/Retarder Temp (EMS) B-7 40
Ground - Cab E-13 E Switch - Diagnostic Enable (Eng) D-8 B
Ground - Cab/Frame B-11 6 Switch - Disconnect A-2 43
Ground - Engine A-4 C Switch - Dome Lamp D-2 G
Ground - Engine (Alternator) B-7 2 Switch - Dome Lamp E-5 A
Ground - Frame B-9 6 Switch - Engine Coolant Flow (EMS) B-4 42
Ground - Frame/Engine A-12 8 Switch - Engine Coolant Temp (Shutter) B-8 19
Indicator - Transmission Gear E-6 B Switch - Engine Flood Lamp E-1 43
Lamp - Engine Air Filter E-8 B Switch - Engine Shutdown A-5 43
Lamp - Engine Control Fault D-8 B Switch - Fog Lamp D-2 G
Lamp - Engine Overspeed Warning E-8 B Switch - Fuel Filter Press (EMS) B-5 45
Lamp - Action (EMS) D-4 B Switch - Headlight Dimmer F-3 A
Lamp - Retarder D-3 B Switch - Key D-8 C
Meter - Service D-9 C Switch - Ladder Lamp D-1 43
Module - Stop/Tail Lamp B-14 15 Switch - Ladder Lamp D-2 G
Monitor - Operator (EMS) E-6 B Switch - Left Hoist Screen Press (EMS) A-10 46
Motor - Brake Retract B-14 16 Switch - On/Off (Auto Retarder) E-3 B
Motors - Blower C-4 A Switch - Operator Monitor Test (EMS) C-4 B
Panel - Payload Monitor Operator C-5 B Switch - Panel Dimmer D-2 G
Pickup - Engine Speed (Tach/
Automatic Retarder Control)
B-7 17 Switch - Parking Brake Press (EMS) C-15 E
Relay - Backup E-15 E Switch - Refrigerant Press (A/C) B-8 49
Relay - Main E-I5 E Switch - Retarder Press (Auto Retarder) D-3 F
Resistor - Blower Speed C-5 A Switch - Retarder Press (Retarder Lamp) D-3 F
Resistor - Dimmer D-2 G Switch - Right Hoist Screen Press (EMS) A-10 46
Resistor - Ether Aid B-3 23 Switch - Running Lamp E-2 G
Sender - Brake Oil (Gauge) B-11 18 Switch - Secondary Brake Press (Trans) C-15 E
Sender - Engine Coolant Temp (Gauge) B-5 19 Switch - Service Clear (Auto Retarder) E-3 E
Sender - Transmission Speed A-13 20 Switch - Service Clear (Trans) E-6 D
Sender - Wheel Speed (Tractn) A-15 21 Switch - Service Set (Auto Retarder) E-3 E
Sender - Wheel Speed (Tractn) B-15 22 Switch - Service Set (Trans) E-6 D
Sensor - Atmospheric Press (Eng) D-6 E Switch - Service/Retarder Press (Tractn) C-14 E
Sensor - Engine Coolant Temp (Eng) B-4 19 Switch - Service/Retarder Press (Trans) C-14 E
Sensor - Engine Oil Pressure (Eng) B-4 44 Switch - Shift Lever E-8 C
Sensor - Engine Speed (Eng) B-4 17 Switch - Start Aid D-15 C
Sensor - Left Front Strut Press (Payld) A-6 24 Switch - Start Aid Temp B-7 19
Sensor - Left Rear Strut Press (Payld) A-12 25 Switch - Steering Press A-11 36
Sensor - Left Turbo Inlet Press (Eng) B-4 19 Switch - Stop Lamp Press (Module) C-13 E
Sensor - Right Turbo Inlet Press (Eng) B-4 44 Switch - Thermostat (A/C) C-5 A
Sensor - Right Front Strut Press (Payld) A-6 26 Switch - Throttle Bypass (Eng) D-8 B
Sensor - Right Rear Strut Press (Payld) A-12 27
Switch - Torque Converter Inlet Filter
(EMS)
A-10 53
Sensor - Throttle Position (Eng) D-6 A
Switch - Torque Converter Outlet Screen
(EMS)
A-10 51
Sensor - Turbo Outlet Press (Eng) B-3 19 Switch - Traction Aid Test D-8 C
Solenoid - 4 Way B-14 28 Switch - Transmission A-14 52
Solenoid - Air Conditioner Compressor A-8 29 Switch - Transmission Filter (EMS) A-11 53
Solenoid - Air Start B-13 30 Switch - Transmission Supply (EMS) A-11 53
Solenoid - Automatic Retarder D-3 F Switch - Turn Signal F-4 A
Solenoid - Automatic Retarder Supply D-3 F Tachograph F-12 D
Solenoids - Cylinder Head (1 per cylinder) A, B-3 32 Tachometer D-5 B
Machine locations are repeated for components located close together,
A Components in operators compartment.
B = Components in dash.
C = Components in console.
D = Components behind seat.
E = Components in rear compartment.
F = Components in front compartment.
G = Components in overhead console.
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
9G1950 Resistor - Blower Motor Speed Overall 2.0 ± .1; Tap 1.0 ± .05
3T3437 Resistor - Panel Dimmer 10.0 ± 0.1
9G9988 Solenoid -4 Way 24.9
5T4434 Solenoid - Air Start 42.0 ± 4.0
3E8691 Solenoid - Auto Retarder 29.8 ± 1.5
7X1120 Solenoid - Down Shift, Up Shift, Lockup 33.7
9X7137 Solenoid - Ether 3.3 ± 1
3T0062 Solenoid - Proportional 16.0
7N9719 Solenoid - Shutter 68.0
6T8046 Solenoid - Steering Bleed 20.1 ± 1.0
¹ At room temperature.
Failure Mode Identifiers (FMI)
FMI No.
Failure Description
0 Data valid but above normal operational range.
1 Data valid but below normal operational range.
2 Data erratic, intermittent, or incorrect.
3 Voltage above normal or shorted high.
4 Voltage below normal or shorted low.
5 Current below normal or open circuit.
6 Current above normal or grounded circuit.
7 Mechanical system not responding properly.
8 Abnormal frequency, pulse width, or period.
9 Abnormal update.
10 Abnormal rate of change.
11 Failure mode not identifiable.
12 Bad device or component.
13 Out of calibration.
Component Identifiers (CID¹)
CID No. Component
Auto Retarder Control (ARC)
91
Throttle Position Sensor
168
Electrical System Voltage
190
Engine RPM Sensor
248
CAT Data Link
627
Secondary Brake Pressure Switch
650
Harness Code
700
Actual Gear Switch
702
Shift Lever Switch
710
ARC Supply Solenoid
711
ARC Control Solenoid
712
Retarder Lamp
713
ARC On/Off Switch
714
Auto Retarder Pressure Switch
715
Retarder Pressure Switch
Electronic Engine Control
001
Cylinder 1 Injector Solenoid
002
Cylinder 2 Injector Solenoid
003
Cylinder 3 Injector Solenoid
004
Cylinder 4 Injector Solenoid
005
Cylinder 5 Injector Solenoid
006
Cylinder 6 Injector Solenoid
007
Cylinder 7 Injector Solenoid
008
Cylinder 8 Injector Solenoid
009
Cylinder 9 Injector Solenoid
010
Cylinder 10 Injector Solenoid
011
Cylinder 11 Injector Solenoid
012
Cylinder 12 Injector Solenoid
091
Throttle Position Sensor
100
Engine Oil Pressure Sensor
110
Coolant Temperature Sensor
168
Electrical System Voltage
190
Engine RPM Sensor
248
CAT Data Link
253
Personality Module Mismatch
261
Timing Calibration
262
Analog Sensor Power Supply
263
Digital Sensor Power Supply
267
Shutdown Inputs Are Incorrect
268
Programmed Parameter Fault
273
Turbo Outlet Pressure Calibration
274
Atmospheric Pressure Calibration
275
Turbo Inlet Calibration
276
Turbo Inlet Calibration
281
Engine Lamp
282
Overspeed Lamp
283
Filter Restrict Lamp
284
EMS System Enable
285
EMS Coolant Lamp
286
EMS Oil Lamp
Component Identifiers (CID¹)
CID No. Component
EPTC II
168
Electrical System Voltage
190
Engine RPM Sensor
269
Sensor Supply
627
Secondary Brake Pressure Switch
650
Harness Code
700
Actual Gear Switch
701
Transmission Output Speed Sensor
702
Shift Lever Switch
704
Service Brake Pressure Switch
705
Body Raise Switch
706
Body Up Switch
707
Up Solenoid
708
Down Solenoid
709
Lockup Solenoid
FLASH CODE CONVERSION
Flash
Code
Component
Identifiers ¹
Failure Mode
12 267 02
16 281,282,283 05, 06
17 168 00, 01
18 284,285,286 05, 06
21 262, 263 03, 04
24 100 03,04
25 273 03, 04
26 274 03, 04
27 110 03,04
29 275 03, 04
32 91 08
34 190 02
39 276 03, 04
42 100, 261, 273, 274, 275, 276 13
52 253 02
54 248 09
55 - -
56 268 02
71 1 05, 06
72 2 05, 06
73 3 05, 06
74 4 05, 06
75 5 05, 06
76 6 05, 06
77 7 05, 06
78 8 05, 06
81 9 05, 06
82 10 05,06
83 11 05,06
84 12 05,06
¹ See Component Identifier List.
² See Failure Mode Identifier List.
Identifiers ²
Related Electrical Service Manuals
Form Number
Actual Gear Indicator SENR4252
Alternator; 30-SI Series SENR7508
Automatic Electronic Traction Aid SENR2986
Automatic Retarder Control System SENR5683
Electronic Monitoring System SENR2945
Electronic Neutral Start Control SENR3889
Electronic Troubleshooting
3512 And 3516 EUI Engine
SENR5597
EPTC II For ICM Transmissions SENR5618
Starting And Charging Systems SENR2947
Truck Payload Measurement System SENR4733
Title
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
2M9346 Brake Air Pressure (Stop Lamp)
45 kPa MAX
(6.5 psi MAX)
5 kPa MIN
(0.5 psi MIN)
NormallyOpen
3L6306
Service/Retarder Press (Tractn)
Service/Retarder Press (Trans)
55.2 ± 13.8 kPa
(8 ± 2 psi)
_
_
NormallyClosed
3T3195
Parking Brake Press (EMS)
Secondary Brake Press (Trans)
656 ± 35 kPa
(95 ± 5 psi)
552 ± 35 kPa
(80 ± 5 psi)
NormallyOpen
4D4785 Retarder Press (Warning)
27.6 ± 3.4 kPa
(4.0 ± .5 psi)
_
_
NormallyOpen
7N4447
Fuel Filter Press (EMS)
Torque Converter Inlet Filter (EMS)
119 ± 14 kPa
(17.0 ± 2.0 psi)
NormallyClosed
7N7854
Brake Oil Temp (EMS)
Converter/Retarder Temp (EMS)
123.9 ± 2.8°C
(255 ± 9°F)
112.8°C MIN
(235°F MIN)
NormallyClosed
7X5988 Engine Coolant Temp (Start Aid)
21.1 ± 2.8°C
(69.8 ± 5°F)
12.8°C MIN
(55°F MIN)
NormallyClosed
8T8639 Refrigerant Pressure (A/C)
344.5 ± 34.5 kPa
(50 ± 5 psi)
172.3 ± 21 kPa
(25 ± 3 psi)
NormallyOpen
9G3341 Power Train Oil Temperature (EMS)
51.7 ± 2.8°C
(125 ± 5°F)
43.0°C MIN
(110°F MIN)
NormallyClosed
9G8009 Brake Air Pressure (EMS)
517 ± 35 kPa
(75.0 ± 5.0 psi)
448 ± 35 kPa
(65.0 ± 5.0 psi)
NormallyOpen
9X3040 Engine Coolant Flow (EMS)
362 ± 29 mN (45.6 mm ID
point)
(1.3 ± .1 oz, 1.8 in ID point)
303 mN MIN
(1.1 oz MIN)
NormallyOpen
9X7781
Left Hoist Screen Bypass Press (EMS)
Right Hoist Screen Bypass Press (EMS)
210 ±70 kPa
(30 ± 10 psi)
_
_
NormallyOpen
9X7781
Torque Converter Outlet Screen (EMS)
Transmission Supply (EMS)
210 ± 70 kPa
(30 ± 10 psi)
_
_
NormallyOpen
9W0263 Auto Retarder Press
48.2 ± 13.8 kPa
(7.0 ± 2.0 psi)
24.1 kPa MIN
(3.5 psi MIN)
NormallyClosed
7N7849
Engine Coolant Temp (Shutter)
Aftercooler Temp (EMS)
88.0 ± 2.8°C
(190.0 ± 5.0°F)
79.0°C MIN
(174.0°F MIN)
NormallyClosed
3E7809 Steering Press (Steering Action)
1900 kPa MAX
(275 psi MAX)
1400± 140 kPa
(205 ± 20 psi)
Pins B-C (N.C.)
Pins B-A (NO.)
3E6461 Steering Press (Steering Action)
11000 kPa MAX
(1600 psi MAX)
9000 ± 350 kPa
(1300 ± 51 psi)
Pins B-C (N.C.)
Pins B-A (NO.)
7X2013 A/C Press (Shutter/Compressor) Pins 1A-2A
1862 to 2275 kPa ¹
(270 to 330 psi)
552 to 827 kPa ²
(80 to 120 psi)
NormallyOpen
7X2013
A/C Press (Shutter/Compressor)
Pins 3A-4A
241 to 414 kPa ³
(35 to 60 psi)
1379 to 1586 kPa ¹
(200 to 230 psi)
Normally Closed
N.C. Normally Closed
N.O. Normally Open
¹ With a rising pressure.
² Below opening pressure.
³ Below closing pressure.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Lighting Circuits (Continued)
101 RD BAT 635 BU PAYLOAD MON RED LAMP
102 BU HD LMP 636 GN PAYLOAD MON GREEN LAMP
103 YL AUX CKT 639 WH LEFT HAND STOP/TAIL LAMP
105 BR KEY SW 640 GN RIGHT HAND STOP/TAIL LAMP
107 WH ENG SHUT - DOWN FIRE SUPPR
Control Circuits
109 OR ALT OUTPUT (+) TERM. 700 PK AETA TEST SW
112 PU MAIN POWER RELAY OUTPUT 703 BU XMSN UP SOL
113 OR OPR MON PANEL B+ SWITCHED 704 GY XMSN DOWN SOL
115 PK AUX CKT 705 PK XMSN LOCKUP CLUTCH SOL BASIC
120 YL AUX CKT 706 BR XMSN RETARDER SW
121 YL BACKUP ALARM TO LAMP 707 PU XMSN BED RAISE SW
122 BU AUX CKT 709 OR SENSOR POWER SUPPLY
123 WH AUX CKT 710 GN XMSN SPEED PICKUP SIGNAL
124 GN A/C 711 BR XMSN LEVER CODE 1
126 PK XMSN CONT 712 WH XMSN LEVER CODE 2
129 BU AUX CKT 713 OR XMSN LEVER CODE 3
132 PK AETA CONT 714 YL XMSN LEVER CODE 4
135 BU AUX CKT 715 GN XMSN LEVER CODE 5
138 GN AUTO LUBE PUMP TO PAYLOAD MON 716 BU XMSN LEVER CODE 6
139 OR AUX CKT 720 PU XMSN BRAKE SW
149 PU AUX CKT 721 BR XMSN GEAR CODE 1
150 OR EUI (ADEM) 722 WH XMSN GEAR CODE 2
176 OR AUX CKT 723 OR XMSN GEAR CODE 3
176 YL AUX CKT 724 YL XMSN GEAR CODE 4
Ground Circuits
725 GN XMSN GEAR CODE 5
200 BK MAIN CHASSIS 726 BU XMSN GEAR CODE 6
201 BK OPR MON PANEL CMS 733 BR SWITCHING GEAR CODE 1 FRONT
202 BK XMSN CONT 734 WH SWITCHING GEAR CODE 2 FRONT
203 BK CHASSIS DIAGNOSTIC 735 OR SWITCHING GEAR CODE 3 FRONT
207 BK STARTER DIAGNOSTIC 736 YL SWITCHING GEAR CODE 4 FRONT
210 BK CONVERTER OUTPUT (24/12 VOLT) 737 GN SWITCHING GEAR CODE 5 FRONT
212 BK AETA CODING PIN 16 767 WH AETA PICKUP POWER
213 BK AETA CODING PIN 17 768 OR AETA PICKUP XMSN
214 BK AETA CODING PIN 18 769 BU WHEEL SPEED PICKUP LEFT
215 BK AETA CODING PIN 19 770 GN WHEEL SPEED PICKUP RIGHT
216 BK AETA CODING PIN 20 772 BR AETA RETARDER SW
217 BK XMSN ID CODE 2 773 GY AETA SERVOVALVE
218 BK XMSN ID CODE 1 774 YL AETA SOL - LEFT
219 BK XMSN ID CODE 0 775 BR AETA SOL - RIGHT
227 BK XMSN ID CODE 3 777 PU BRAKE RELEASE MOTOR
229 BK EUI CONT 794 YL PAYLOAD MON XMSN SPEED
231 BK XMSN SW 799 WH SENSOR POWER
250 BK PAYLOAD MON - CUSTOMER GROUND 801 PK AUTO LUBE SOL OR MOTOR
251 BK PAYLOAD MON - SYSTEM GROUND 818 BR SERIAL DATA (TRANSMIT)
280 BK XMSN CONT IDENT CODE 4 819 GY SERIAL DATA (RECEIVE)
A215 BK AUTO RETARDER CONT HARNESS CODE 0 820 BU TRANSMIT KEY
A216 BK AUTO RETARDER CONT HARNESS CODE 1 858 GY PAYLOAD MON RIGHT FRONT SENSOR
A217 BK AUTO RETARDER CONT HARNESS CODE 2 859 YL PAYLOAD MON LEFT FRONT SENSOR
A218 BK AUTO RETARDER CONT HARNESS CODE 3 860 PK PAYLOAD MON RIGHT REAR SENSOR
Basic Machine Circuits
861 PU PAYLOAD MON LEFT REAR SENSOR
306 GN START RLY COIL TO NEUT START / KEY SW 863 BU PAYLOAD MON TRANSMIT LCD OUT
307 OR KEY SW TO NEUT START SW 864 BR PAYLOAD MON CLOCK LCD OUT
308 YL MAIN POWER RELAY COIL 865 GY PAYLOAD MON LATCH LCD OUT
310 PU START AID SW TO START AID SOL 866 PK PAYLOAD MON TEST/SET
311 WH START AID SOL TO TEMP SW 867 PU PAYLOAD MON MODE
315 GN START AID BKR TO START AID RELAY 891 BU
NEUT START CONT TO PAYLOAD
MON SYSTEM
317 YL START AID RELAY TO START AID SOL 892 BR EUI HS DATA LINK (-)
321 BR BCKP ALARM LAMP TRAVEL ALARM 893 GN EUI HS DATA LINK (+)
326 PU KEY SW “C” TERM. 913 BU SHUTTER CONT TEMP SW TO PRESS. SW
327 PK SHUTDOWN SOL 914 YL PRESS. SW TO SHUTTER CONT SOL
360 GN ENGINE SHUTDOWN SIGNAL C 993 BR EUI SENSOR ANALOG GROUND
361 OR ENGINE SHUTDOWN SIGNAL D 994 GY EUI ENG OIL PRESS.
Monitoring Circuits
995 BU EUI COOLANT TEMP (ANALOG)
403 GN ALTERNATOR (R) TERM. 996 GN ENG SPEED SENSOR V+
405 GY OPR MON OIL PRESS. (LO SETTING) 997 OR EUI SENSOR ANALOG POWER
406 PU OPR MON COOLANT TEMP 998 BR EUI SENSOR DIGITAL GROUND
407 PK
OPR MON CONVERTER/RETARDER
OIL TEMP
999 WH EUI ENGINE SPEED SIGNAL
408 WH OPR MON SYSTEM AIR PRESS. A700 OR EUI SENSOR DIGITAL POWER
409 OR OPR MON NEUT A701 GY EUI CYLINDER SOL 1
410 WH OPR MON FAULT ALARM A702 PU EUI CYLINDER SOL 2
411 PK OPA MON MASTER FAULT LAMP A703 BR EUI CYLINDER SOL 3
412 BU OPR MON COOLANT FLOW A704 GN EUI CYLINDER SOL 4
413 BR OPR MON FUEL PRESS. A705 BU EUI CYLINDER SOL 5
415 GN OPR MON TEST SW A706 GY EUI CYLINDER SOL 6
417 GY PRIMARY STER SW A707 PU EUI CYLINDER SOL 7
419 YL OPR MON PARKING BRAKE A708 BR EUI CYLINDER SOL 8
426 BR OPR MON POWER TRAIN OIL FILTER A709 OR EUI CYLINDER SOL 9
430 BU OPR MON AIR FILTER A710 GY EUI CYLINDER SOL 10
437 BR
OPR MON FUEL LEVEL TO FUEL FILTER
JUMPER
A711 PU EUI CYLINDER SOL 11
438 YL OPR MON COOLANT TEMP JUMPER A712 BR EUI CYLINDER SOL 12
441 OR ENG COOLANT TEMP GAGE A713 GN EUI CYLINDER SOL 13
446 PU BRAKE OIL TEMP GAGE A714 BU EUI CYLINDER SOL 14
449 BU SPDOM SENDER (SIGNAL NO. 1) A715 GY EUI CYLINDER SOL 15
450 YL TACH SENDER (+) A716 PU EUI CYLINDER SOL 16
451 BR TACH SENDER (-) A721 WH EUI CYLINDER SOL 1 RETURN
454 GN RETARDER INDICATOR LAMP A722 YL EUI CYLINDER SOL 2 RETURN
470 PU CANE SW NEUT A723 OR EUI CYLINDER SOL 3 RETURN
472 OR PARKING BRAKE SW TO OVERSTROKE SW A724 WH EUI CYLINDER SOL 4 RETURN
473 GY OVERSTROKE SW TO OVERSTROKE SW A725 YL EUI CYLINDER SOL 5 RETURN
474 WH OVERSTROKE SW TO OVERSTROKE SW A726 OR EUI CYLINDER SOL 6 RETURN
481 GN
CONVERTER TEMP SW TO BRAKE OIL
TEMP SW
A727 PK EUI CYLINDER SOL 7 RETURN
A430 OR EUI CONT FAULT OUTPUT A728 WH EUI CYLINDER SOL 8 RETURN
A446 PU
ELECTRONIC PUMP CONT LINKAGE CONT
FAULT #2
A729 YL EUI CYLINDER SOL 9 RETURN
A489 BU OPR MON STEERING SPEED CONTROL SW A730 OR EUI CYLINDER SOL 10 RETURN
A490 GN OVERSTROKE SW TO OVERSTROKE SW A731 WH EUI CYLINDER SOL 11 RETURN
A491 WH
TRANS SUPPLY SW TO TORQUE CONV INLET
FILTER SW
A732 YL EUI CYLINDER SOL 12 RETURN
A492 OR HOIST FILTER SW TO HOIST FILTER SW A733 OR EUI CYLINDER SOL 13 RETURN
A493 YL HOIST FILTER SW TO T.C. SW A734 PK EUI CYLINDER SOL 14 RETURN
Accessory Circuits
A735 WH EUI CYLINDER SOL 15 RETURN
513 OR
A/C COMPRESSOR/REFRIGERANT
PRESS. SW
A736 YL EUI CYLINDER SOL 16 RETURN
515 GY BLOWER MOTOR (HI) A746 PK EUI BOOST PRESSURE
516 GN BLOWER MOTOR (MEDIUM) A747 GY EUI ATMOSPHERIC PRESSURE SIGNAL
517 BU BLOWER MOTOR (LO) A748 GY EUI TIMING WHEEL CAL
521 YL A/C SW TO REFRIGERANT SW A980 GY SERVICE METER B+ TO ENG OIL PRESS. SW
522 WH A/C CLUTCH TO THERMOSTAT SW A983 BU ENG THROTTLE CONT - SIGNAL
537 GN TURN SIGNAL SW TO FLASHER B427 BU
TORQUE CONV INLET FILTER SW TO HOISE
SCREEN SW
539 BU TURN SIGNAL INDICATOR BASIC/RIGHT B447 PU
STEERING (HIGH) PRESS SW TO LOW PRESS
(STEERING)
540 WH TURN SIGNAL INDICATOR LEFT B748 BR STEERING SPEED CTL SPEED IN
Lighting Circuits
B771 BR FAN CONTROL SOLENOID RETURN
600 BR DASH LAMP BASIC B926 GY START AID TIMER OUTPUT
601 GY DASH LAMP HI B948 BR
ENG OVERSPEED CONT TO INDICATOR
LAMP
602 WH DOME LAMP B994 GN
A/C CLUTCH SOL TO SHUTTER CONT
PRESS. SW
604 OR STOP LAMP C915 GY ADEM DIAGNOSTIC CODES
605 YL TURN LAMP - LEFT C940 GN EUI THROTTLE BYPASS - LO
606 GY TURN LAMP - RIGHT C972 YL ELEVATED LOW IDLE ENABLE SW
607 PK FLOOD LAMP - FRONT D740 BR PARASITIC HYDRAULIC LOAD SOLENOID
608 GN FLOOD LAMP - REAR D741 YL OIL COOLER DIVERTER SOLENOID
610 OR HEAD LAMP BASIC D772 PU LEFT TURBO INLET PRESS SENSOR
611 PU HEAD LAMP HI D982 PK EUI TIMING CALIB
612 GY BACKUP LAMP D984 GN AUTO RETARD CONT RESUME SW
614 PU PARK/TAIL/DASH LAMP D985 BR AUTO RETARD ON SW
619 GN HEAD LAMP LO D986 PK AUTO RETARD OFF SW
620 WH FLOOD LAMP - FRONT (ENG. FLOOD LAMP) D988 WH AUTO RETARD AIR CONT VALVE
622 PU FLOOD LAMP 3-WAY SW JUMPER D989 BU AUTO RETARD AIR SUPPLY VALVE
623 BU FLOOD LAMP 3-WAY SW JUMPER D991 OR AUTO RETARD PRESSURE SW
631 GY FOG LAMP - RIGHT D992 PU AUTO RETARD MANUAL RETARDER SW
632 WH FOG LAMP - LEFT D993 YL AUTO RETARD SERVICE RESET
635 BR TURN SIGNAL COMMON D994 BU AUTO RETARD SERVICE CLEAR
D996 PU TRANSMISSION CONT SERVICE SET
D997 YL TRANSMISSION CONT SERVICE CLEAR
E750 PU BODY UP POSITON SENSOR SIGNAL
HARNESS CONNECTOR LOCATION CHART
Connectors
Machine
Location
Harness And/Or
Components
Schematic
Location
Connectors
Machine
Location
Harness And/Or
Components
Schematic
Location
70 Contacts *
XX - 7E-6361
Engine Control
A-5 E
A 102-8602
F - 102-8963
F-9
40 Contacts
J
A - 102-8602
XX - 7E6361
B-8 B
A - 102-8602
T - 6G-9462
E-4
*
F - 102-8963
Transmission Control
F-7
E - 5T-8888
U - 51-8887
A-14
*
M - 2A-7119
Auto Retarder Control
E-2
SS - 8W-3844
QQ - 2A-7132
B-6
25 Contacts
J
A - 102-8602
B - 2A-6777
B-10 E
A - 102-8602
D - 5T-8598
C-12
J
A - 102-8602
C - 2A-6817
B-11 B
A - 102-8602
K - 8X-9992
E-4
D
A - 102-8602
Diagnostic Connector
F-13 C
B - 2A-6777
L - 2A-6818
C-3
*
A - 102-8602
Operator Monitor (EMS)
E-6 F
B - 2A-6777
QQ - 2A-7132
B-7
*
D - 5T-8598
Traction Aid Control
D-13 E
M - 2A-7119
BB - 7I-4732
E-2
J
F - 102-8963
G - 102-9095
B-13
Customer Data
Connector
D-1
*
QQ - 2A-7132
Payload Monitor Cont
D-13 H
R - 6T-4301
S - 6T-4300
C-5
14 Contacts J
D - 51-8598
E - 5T-8888
B-12 D
QQ - 2A-7 32
Customer Data
Connector
D-14
A - 102-8602
H - 2A-6492
D-13 B
A - 102-8602
K - 8X-9992
E-4
A - 102-8602
H - 2A-6492
E-13 H
A - 102-8602
R - 61-4301
D-3
*
F - 102-8963
Shift Lever Switch
E-8 E
A - 102-8602
QQ - 2A-7132
D-9
G - 102-9095
V - 7T-3418
A-13
B - 2A-6777
L - 2A-6818
F-1
L - 2A-6818
Q - 2A-6819
F-1 *
E - 5T-8888
4 Way Solenoid
B-14
*
M - 2A-7119
Auto Retarder Control
E-3 E
F - 102-8963
Bed Raise Switch
D-12
*
V - 71-3418
Transmission Switch
A-13 *
F - 102-8963
Transmission Gear Indicator
E-6
*
F - 102-8963
Transmission Control
F-7
Q - 2A-6819
X - 7I-5124
B-2
E
A - 102-8602
J - 8W-0639
C-9
Q - 2A-6819
X - 7l-5124
F-1
E
A - 102-8602
J - 8W-0639
C-9
Q - 2A-6819
Y - 7I-5382
B-1
*
A - 102-8602
Neutral/Start Control
F-6
Q - 2A-6819
Y - 7I-5382
E-1
B
A - 102-8602
Service Tool Connector
F-6
AAA - 8X-2419
DDD - 8X-0596
B-8
A - 102-8602
L - 2A-6818
F-2 *
HH - 102-8856
Stop/Tail Lamp Module
B-14
F
A - 102-8602
M - 2A-7119
E-3
QQ - 2A-7132
RR - 8W-3843
B-6
C - 2A-6817
HH - 102-8856
B-15
AAA - 8X-2419
BBB - 8W-9735
B-9
L - 2A-6818
Q - 2A-6819
C-2
*
QQ - 2A-7132
Payload Monitor OpPanel
C-6
E
A - 102-8602
DD - 51-9326
C-15
A - 102-8602
L - 2A-6818
F-2
F
A - 102-8602
M - 2A-7119
D-3
*
A-102-8602
Steering Action Control
C-13
*
A - 102-8602
Steering Bleed Control
E-9
*
A - 102-8602
Transmission Speed Distributor
E-9
*
F - 102-8963
Transmission Gear Indicator
E-6
Machine locations are repeated for connectors located close together.
*=Connector is located at the component.
B=Connectors behind dash.
C=Connectors in console.
D=Connectors behind seat.
E=Connectors in rear compartment.
F=Connectors in front compartment.
H=Connectors behind air conditioning controls.
J=Connectors on rear compartment sidewall.
6 Contacts
5 Contacts
4 Contacts
8 Contacts
37 Contacts
20 Contacts
10 Contacts
9 Contacts
7 Contacts
2
3
9
1
10
15
12
13
24
21
21
19
16
22
23
20
14
18
15
13
17
11
8
7
7
7
7
4
5
6
6
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to the
gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The electromagnet
can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
that makes an electromagnet when current flows through it. The electromagnet can open or
close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
A
G
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
36
38
F
39
40
42
43
44
45
46
49
51
52
53
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
36
38
F
G
39
40
42
43
44
45
46
49
51
52
53
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
7
8
11
13
15
16
17
21
22
23
24
SENR5672
January 1993
785B Truck
Electrical System
6HK1-UP
REAR COMPARTMENT SIDEWALL (AREA J) RIGHT SIDE
REAR COMPARTMENT (AREA E) REAR VIEW
MACHINE HARNESS CONNECTOR AND COMPONENT LOCATIONS
©
1993 Caterpillar
All Rights Reserved
Printed in U.S.A.
_
_
L63
L37
2
1
2
1
2
4
3
2
1
4
2
1
1
2
4
2
1
2
1
4
3
3
5
1
2
8
7
1
4
5
6
2
2
1
3
4
5
7
6
8
3
7
4
5
2
1
2
2
1
1
2
1
2
2
1
C
A
B
5
1
4
2
2
1
2
1
4
10
9
3
4
2
1
3
6
1
3
1
2
2
1
5
4
2
3
1
5
2
10
9
8
7
6
5
4
3
2
1
8
1
2
3
3
1
C
3
1
1
4
5
7
6
2
4
3
5
1
A
B
2
1
C
1
A
B
C
C
B
A
10
9
8
7
6
5
2
4
3
2
1
15 14 13
15 14 13
12 11 10
12 11 10
9 8 7
9 8 7
6 5 4 3 2 1
6 5 4 3 2 1
F
E
D
C
B
A
F
E
D
C
B
A
6
5
4
02
00
00
ATCH8X-1025
8W-9735
8X-2419
CCC
BBB
AAA
CCC
ATCH
ATCH
A-9
B-9
B-9
B994-GN-14
XX
513-OR-14
522-WH-14
ZZ
ZZ
AAA
ZZ
BBB
BBB
BBB
BBB
BBB
NOTE: WITH SHUTTER CONTROL, REMOVE WIRE 522-WH-14
FROM COMPRESSOR. REPLACE BLADE TERMINAL WITH PIN
TERMINAL AND INSERT INTO PIN NUMBER 3 OF HARNESS AS. AAA.
PLUG WIRE B994-GN-14 FROM HARNESS AS. AAA INTO COMPRESSOR
WHERE 522-WH-14 WAS REMOVED.
SHUTTER
COOLANT
TEMP SW
7N-7849
AAA
AAA
113-OR 113-OR 913-BU
A/C
PRESSURE SW
7X-2013
SHUTTER
SOLENOID
7N-9719
913-BU
522-WH-14
B994-GN-14
YL-14
BK/WH-14
BK-14
OR-14
914-YL
914-YL
AAA
AAA
AAA
CCC
200-BK
914-YL
2A
4A
2
1
A/C COMPRESSOR
CLUTCH COIL
7N-4287
DDD
G
202-BK
E750-PU
BODY
DOWN
SENSOR
3E-0461
3
2
1
BK-18
BU-18
RD-18126-PK
GROUND
SOLENOID
+ BATTERY
A
A
THROTTLE
BYPASS SW
6T-3990
998-BR
XX
YY
3A
1A
200-BK
A
H H
A
176-OR
105-BR
121-YL
200-BK
308-YL
121-YL
101-RD
207-BK
200-BK-14
611-PU-14
441-OR
446-PU-14
201-BK
601-GY
540-WH
539-BU
200-BK-14
EE
EE
9 GA
TO FRONT
HOUSING
124-GN-14
522-WH-14
521-YL-14
A-5007X-6035EE
TO MOUNTING
BOLT
2
1
YY
XX
1
2
2
1
XX
YYYY
XX
1
2
2
1
XX
YY
XX
YY
YY
YY
BR
BR
BR
BR
YY
BR
YY
XX
BR
YY
YY
YY
XX
A702-PU
A730-OR
A704-GN
A706-GY
A732-YL
A708-BR
A710-GY
A734-PK
A712-BR
A711-PU
A733-OR
A709-OR
A707-PU
A731-WH
A705-BU
BR
BR
YY
YYYY
YY
BR
BR
A701-GY
A729-YL
A729-YL
A703-BR
A705-BU
A731-WH
A731-WH
A707-PU
A709-OR
A733-OR
A733-OR
A711-PUA712-BR
A734-PK
A734-PK
A710-GY
CYLINDER
HEAD
SOL 11
YY
CYLINDER
HEAD
SOL 9
CYLINDER
HEAD
SOL 7
CYLINDER
HEAD
SOL 5
CYLINDER
HEAD
SOL 3
CYLINDER
HEAD
SOL 1
CYLINDER
HEAD
SOL 12
CYLINDER
HEAD
SOL 10
CYLINDER
HEAD
SOL 8
CYLINDER
HEAD
SOL 6
CYLINDER
HEAD
SOL 4
YY
XXXX
YY
YY
YY
BR
BR
BR
BR
YY
YY
YY
XXXX
YY
YY
YY
BR
BR
CYLINDER
HEAD
SOL 2
BR
BR
YY
YYYY
A703-BR
YY
BR
BR
BR
BR
YY
YY
INJECTOR GP (16)
7E-8836
A708-BR
A732-YL
A732-YL
A706-GY
A729-YL
A704-GN
1
2
2
1
200-BK-14
200-BK-14
200-BK-14
L
A730-OR
A701-GY
Q
Q
Q
607-PK-14 607-PK-14
607-PK-14
622-PU-14
623-BU-14
620-WH-14
149-PU-14
620-WH-14
620-WH-14
619-GN-14
611-PU-14
10203-BK
A730-OR
A702-PU
200-BK-14
Q
Q
611-PU-14
619-GN-14
102-BU-14
102-BU-14
619-GN-14
611-PU-14
619-GN-14
611-PU-14
200-BK-14
200-BK-14
1
2
2
1
200-BK-14
200-BK-14
200-BK-14
200-BK-14
200-BK-14200-BK-14
1
200-BK-14
102-BU-14
102-BU-14
200-BK-14
200-BK-14
A-8
L
L
614-PU
614-PU
CUSTOMER
DATA
CONNECTOR
799-WH
818-BR
121-YL
251-BK
251-BK
QQ
818-BR
820-BU
250-BK
993-BR
997-OR
997-OR
450-YL
B948-BR
B948-BR
819-GY
892-BR
893-GN
B948-BR
B948-BR
C940-GN
C915-GY
C940-GN
C915-GY
892-BR
176-OR
612-GY
892-BR
893-GN
A
481-GN
A
1
446-PU-14
441-OR
601-GY
412-BU
406-PU
403-GN
413-BR
611-PU-14
A
311-WH
819-GY
310-PU
311-WH
308-YL
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
998-BR
B748-BR
A
A
A
A
993-BR
A
A
A747-GY
A747-GY
D771-BR
A747-GY
A
A
TO DIVTR SOLENOID
&HYD LOAD SOLENOID
YY
D740-BR
B771-BR
D741-YL
D740-BR
B771-BR
B771-BR
D741-YL
200-BK
200-BK
200-BK 200-BK
200-BK
200-BK
A
A
A
A
A
YY
A
202-BK
A
T
200-BK
A
450-YL
112-PU-10 150-OR-14
15A
H
176-OR
150-OR-14
BU-18
BK-18
RD-18
GN-18
OR-18
STEERING
ACTION
CONTROL
9X-7823
PRIM STER
GROUND
+ BATTERY
OP MONITOR
TOS
113-OR
A/C COMPRESSOR
CLUTCH COIL
7N-4287
A/C REFRIGERANT
PRESS SW
8T-8639
NOTE A
T
T
START AID
TEMP SW
7X-5988
ALTERNATOR
9X-7803
ATCH
CONVERTER
TEMP SW
7N-7854
ENGINE SPEED
MAG PICKUP
3E-7886
998-BR
441-OR
437-BR
437-BR
406-PU
201-BK
201-BK
201-BK
201-BK
412-BU
412-BU
T
441-OR
AFTERCOOLER
TEMP SW
7N-7849
COOLANT
TEMP SENDER
6N-5926
COOLANT
FLOW SW
9X-3040
FUEL
FILTER SW
7N-4447
D772-PU
A980-BU
994-GY
997-OR
993-BR
997-OR
993-BR
993-BR
997-OR
997-OR
993-BR
995-BU
996-GN
998-BR
999-WH
997-OR
993-BR
A746-PK
A980-BU
994-GY
995-BU
996-GN
998-BR
999-WH
A
B
C
3
1
A
B
C
A
B
C
A
B
361-OR
360-GN
OR-18
YL-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
ANALOG RET
SIGNAL
+V ANALOG
WH-18
BK-18
OR-18
RD-18
BK-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
ATCH
ATCH
608-GN
202-BK
767-WH
767-WH
202-BK
202-BK
ANALOG RET
SIGNAL
+V ANALOG
GN-18
YL-18
OR-18
OR-18
YL-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
T
361-OR
998-BR
LEFT TURBO
INLET
PRESSURE
SENSOR
6V-1926
767-WH
A
LEFT LAMP
RIGHT LAMP
614-PU
604-OR
640-GN
OR
639-WH 3
4
2 TAIL IN
STOP IN
WH
GN
PU
STOP/TAIL
LAMP MODULE
7X-1670
HH
1
A
251-BK
2
RIGHT TURBO
INLET
PRESSURE
SENSOR
6V-1926
635-BU
ENGINE
OIL
PRESSURE
SENSOR
6V-1964
ENGINE
COOLANT
TEMP
SENSOR
6V-1923
ENGINE
SPEED/
TIMING
SENSOR
3E-0487
311-WH
A
L40
C
636-GN
200-BK
C
A
B
C
C
C
C
250-BK
113-OR
GROUND LEVEL
SHUTDOWN SW
4D-1836
636-GN
123-WH
635-BU
820-BU
B
200-BK-14
229-BK-14
799-WH
A734-PK
A733-OR
A732-YL
A731-WH
A730-OR
A729-YL
799-WH
J
J
L
L3
J
GG
H
H
H
GG
HH
AA
GG
A
A
H
121-YL
121-YL
H
H
H
A
A
A
A
H
A
A
J
A712-BR
A
F
C
C
C
C
F
J
J
J
J
103-YL
A
A
A
A
AA
A
A
A
614-PU
A711-PU
A
A
J
J
J
J
J
J
J
J
J
J
J
A710-GY
A709-OR
A708-BR
A707-PU
A706-GY
L63
A705-BU
A704-GN
A703-BR
L63
L63
602-WH
L63
L63
L63
L63
A493-YL A492-OR
B427-BUA491-WH
A702-PU
540-WH
614-PU
A701-GY
L32
L32
TORQUE CONVERTER
OUTLET SCREEN SW
9X-7781
L32
L82
L83
L83
L83L83
L70
L70
L70
L37
L78
L79
L79
L71
L72
L72
L72
L77
L54
L40
L40
L40
L70
L37
L37
L79
L78
L78
L78
L44
L64
L64
L49
L77
L77
L77
L77 L77
L77
L45
L45
L37
L72
L71
L72
L71
L8
L8
L76
L69
L32
L32
L47
L47
L36
L36
L39
L39
L40
L64
L64
L64
200-BK
L64
L59
L59
L59
L59
L59
L58
L58
L58
L58
361-OR
L24
360-GN
L24
L24
B
L56
994-GY
993-BR
997-OR
A746-PK
A980-BU
995-BU
999-WH
HH
HH
HH
HH
HH
HH
HH
A
A
A
D
F
996-GN
998-BR
438-YL
L56
C972-YL
C915-GY
A747-GY
B748-BR
A489-BU
138-GN
201-BK
417-GY
413-BR
405-GY
B948-BR
893-GN
892-BR
C940-GN
430-BU
L56
308-YL
307-OR
123-WH
446-PU
T
201-BK
BRAKE
OIL SW
7N-7854
L48
L48
L35
L49
L37
A430-OR
A983-BU
A700-OR
L36
L36
150-OR-14
L37
L36
L35
L35
150-OR-14
L35
L34
L34
L34
L34
L49
L49
L55
L55
L55
L55
L38 L38
L38
200-BK-14
202-BK
L49
L32
L32
L32
L25
L25
L24
L24
L9
L39
L39
13
2
67
L48
L48
L48
L45
L45
L45
L47
L47L47
L46
L46
L46
L46
L46
L46
308-YL
201-BK
200-BK-8
BK
BK
BK
66
62
61
60
48
47
46
1
14
15
28
29
42
43
56
17
26
31
40
45
54
59
68
16
27
30
41
44
55
58
69
39
53
36
22
23
65
64
8
7
24
37
9
38
34
49
11
32
21
ENGINE
GROUND
SOL 14&16 RETURN
SOL 13&15 RETURN
SOL 10&12 RETURN
SOL 9&11 RETURN
SOL 6&8 RETURN
SOL 5&7 RETURN
SOL 2&4 RETURN
SOL 1&3 RETURN
SOLENOID 16 POWER
SOLENOID 15 POWER
SOLENOID 14 POWER
SOLENOID 13 POWER
SOLENOID 12 POWER
SOLENOID 11 POWER
SOLENOID 10 POWER
SOLENOID 9 POWER
SOLENOID 8 POWER
SOLENOID 7 POWER
SOLENOID 6 POWER
SOLENOID 5 POWER
SOLENOID 4 POWER
SOLENOID 3 POWER
SOLENOID 2 POWER
SOLENOID 1 POWER
SHUTDOWN SIGNAL D
SHUTDOWN SIGNAL C
OIL PRESS. SIGNAL
ANALOG RETURN
+V ANALOG SUPPLY
BOOST PRESSURE
TURBO INLET RIGHT
COOL. TEMP SIG.
ENGINE SPEED
+V TIMING
DIGITAL RETURN
D982-PK
A748-GY
COOL TEMP (EMS)
12
52
50
ELEV IDLE ENABLE
DIAGNOSTIC ENABLE
ATMOSPHERIC PRESS
ENGINE ON (EMS)
OIL PRESS (EMS)
OVERSPEED LAMP
CAT DATA LINK +
CAT DATA LINK -
THROTTLE BYPASS
AIR FILTER LAMP
DIAGNOSTIC LAMP
THROTTLE SIGNAL
+V THROTTLE
+ BATTERY
+ BATTERY
35
TIMING CAL -
TIMING CAL +
63
4
33
19
L44
L41
L41
25
L41
3
18
10
51
70
57
5
6
20
-BATTERY
-BATTERY
L22
L22
L22
L9
L9
L31
L30
L30
L27
202-BK
202-BK
112-PU-14
202-BK
360-GN
202-BK
202-BK
202-BK
202-BK
GG
GG
L62
112-PU-12
L27
L24
L24
L25
L25
L25
L23
L23
L23
L1
L21
L21
L21
L73
L33
L12
L12
L41
L28
L28
L28
L28
L29
L29
L33
L33
L82
L82
BK-18
L29
L2
L5
L16L16
L16
L16
L13
L13
L13
L15
L15
L15
L17
202-BK
L60
L53
L49
L17
L17
L18
L18
L18
L18
L7L7
L7
L68
L68
L63
L67
L67
L60
L67
L67
C
C
C
C
L41
L60
A
J
J
L20
L38
K
K
K
A
L84
L30
L30
L27
112-PU-14
L53
J
Q
Q
L3
F
F
F
F
F
F
F
201-BK
893-GN
892-BR
893-GN
892-BR
202-BK
ARC SUPPLY
VALVE
3E-8691
202-BK
A
200-BK-14
FOG
LAMP
9X-7165
101-RD-10
BK
BK
L65
L65
D984-GN
521-YL-14
522-WH-14
607-PK-14
124-GN-14
200-BK-14
176-OR
200-BK-14
A
A
D992-PU
D991-OR
454-GN
454-GN
200-BK
A983-BU
A700-OR
A983-BU
A700-OR
430-BU
A430-OR
A983-BU
A700-OR
A430-OR
707-PU
200-BK-14
891-BU
202-BK
430-BU
2
200-BK-14
891-BU
891-BU
430-BU
LAMP
7N-5876
3
2
1
2
2 1
3
L31
799-WH
A
619-GN-14
123-WH
202-BK
201-BK
A
767-WH
L7
L7
L6
WH-18
NOTE E
454-GN
772-BR
PANEL
LAMP
7N-5876
BASE
2G-0151
B-7014E-0718LL
CC
AA
Q
NOTE E: WITH AUTO RETARDER CONTROL, REMOVE
123-WH AND CONNECT 202-BK
200-BK
C
C
C C C
C
A
C
C C C C
403-GN
L33
L33
L33
L33
L33
A
BK-18
A A A A
J
SIG
+
J
202-BK
201-BK
200-BK
539-BU
540-WH
-
441-OR
446-PU-14
539-BU
540-WH
601-GY
611-PU-14
L19
L10
L10
L10
L13
L7
L7
L7
601-GY
XX
BK-18
454-GN
D989-BU
D988-WH
K
K
K
K
K
892-BR
893-GN
A
D986-PK
D985-BR
202-BK
202-BK
202-BK
202-BK
202-BK
D994-BU
D994-BU
D993-YL
SERVICE SET SW
9D-3721
SERVICE CLEAR SW
9D-3721
AUTO RETARD
OFF/ON SW
6T-3991
200-BK
202-BK
202-BK
202-BK
H
H
H
201-BK-14
H
H
891-BU
K
A
K
A
A
450-YL
451-BR
451-BR
L31
891-BU
4
3
K
707-PU
202-BK
601-GY
200-BK
450-YL
200-BK
799-WH
L31
112-PU-12
K
L33
449-BU
200-BK-14
F
M
L73
251-BK
601-GY
601-GY
600-BR
S
S
S
202-BK
NOTE C
NOTE C
601-GY
200-BK-14
CUSTOMER
DATA
CONNECTOR
818-BR
819-GY
250-BK
820-BU
QQ
E
D
C
200-BK
RR
RR
ALT
202-BK
A
176-OR
D988-WH
426-BR
SS
RR
QQ
540-WH
RD
BR
1
2
RD
BR
1
2
PARK/
TURN
LAMP
3T-3967
PARK/
TURN
LAMP
3T-3967
L27
D992-PU
D991-OR
454-GN
105-BR
NOTE
00
00
03
02
01
446-PU-14
01
00
450-YL
D989-BU
D988-WH
S
201-BK
308-YL
E
819-GY
799-WH
250-BK
820-BU
00
QQ
03
2
251-BK
307-OR
01
6
307-OR
307-OR
307-OR 307-OR
307-OR
251-BK
604-OR
605-YL
606-GY
202-BK
02
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
A218-BK
A216-BK
A217-BK
473-GY
A215-BK
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
D984-GN
D984-GN
QQ
K
200-BK
L76
408-WH
419-YL472-OR
408-WH
JJ
ENGINE
GROUND
FRAME
GROUND
BK-4
419-YL
472-OR
FRAME
GROUND
MM
CAB
GROUND
407-PK
D986-PK
D985-BR
200-BK
126-PK
307-OR
409-OR
306-GN
470-PU
M
201-BK
A489-BU
105-BR
200-BK-14
200-BK
START AID
BREAKER
3T-8728
315-GN-12 101-RD-10
A GG
202-BK
3
202-BK
135-BU
210-BK
PAYLOAD
MONITOR
GN LAMP
8T-9684
PAYLOAD
MONITOR
RED LAMP
8T-9683
799-WH
PAYLOAD
MONITOR
OPERATOR
PANEL
9X-6847
202-BK
202-BK
OPERATOR STATION
B-12
A-2/A-1231-8761JJ
02
02
799-WH
799-WH
860-PK
861-PU
251-BK
858-GY
859-YL
251-BK
635-BU
636-GN
799-WH
636-GN
635-BU
799-WH
B
251-BK
794-YL
138-GN
6
5
4
3
2
1
1
2
3
4
RIGHT REAR
STRUT SENSOR
101-9980
LEFT REAR
STRUT SENSOR
101-9980
860-PK
861-PU
251-BK
799-WH
WH-18
BK-18
OR-18
SIGNAL
+V
GROUND
3
2
1
WH-18
BK-18
OR-18
SIGNAL
+V
GROUND
3
2
1
799-WH
799-WH
251-BK
251-BK
861-PU
860-PK
01
PAYLOAD
MONITOR
CONTROL
9X-6846
799-WH
A
635-BU
636-GN
794-YL
859-YL
858-GY
861-PU
860-PK
863-BU
864-BR
865-GY
867-PU
866-PK
865-GY
891-BU
864-BR
863-BU
860-PK
861-PU
858-GY
LEFT FRONT
STRUT SNSR
101-9980
RIGHT FRONT
STRUT SNSR
101-9980
PAYLOAD
MONITOR
GREEN
LAMP
8T-9684
PAYLOAD
MONITOR
RED
LAMP
8T-9683
1
202-BK
1
UNUSED SW
UNUSED SINKING DRIVER
UNUSED PWM, FREQ, SW
SPARE
UNUSED PWM
UNUSED PWM
GROUND
MANUAL RETARD PRESS SW
AUTO RETARD PRESS SW
138-GN
794-YL
202-BK
A
4
1
3
SERVICE BRAKE
AUTO RETARD LAMP
OIL PRESSURE SW
ENGINE SPEED
AIR SUPPLY VALVE
AIR CONTROL VALVE
ACCELERATOR SW
SECONDARY BRAKE SW
RD
RD
BK
BK
1
1
2
2
HARNESS CODE 3
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
BED RAISE
TEST/SET
RX IN
TX KEY OUT
TX OUT
TX LCD OUT
R REAR PR
R FRONT PR
LINK GND
GREEN LAMP
RED LAMP
GROUND
+24V (IN)
L REAR PR
XMSN SPD
LCD CLOCK
LCD LATCH
L FRONT PR
NEUTRAL
MODE
HARNESS CODE 1
HARNESS CODE 2
HARNESS CODE 0
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
818-BR
UNUSED SINKING DRIVER
UNUSED SINKING DRIVER
UNUSED SINKING DRIVER
867-PU
866-PK
865-GY
PU-18
864-BR
1
2
3
4
5
6
7
GROUND
+ BATTERY
GN-18
BK-18
863-BU
251-BK
138-GN
8
WH-18
BU-18
BR-18
GY-18
PK-18
858-GY
859-YL
251-BK
251-BK
799-WH
799-WH
1
2
3
GROUND
+V
SIGNAL
OR-18
BK-18
WH-18
1
2
3
GROUND
+V
SIGNAL
UNUSED SINKING DRIVER
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
UNUSED SW TO GND
AUTO RETARD OFF
AUTO RETARD ON
RESUME
+10V SENSOR SUPPLY
+ BATTERY
DATA LINK -
DATA LINK +
UNUSED
CLEAR SWITCH
SET SWITCH
UNUSED
UNUSED
UNUSED
UNUSED
201-BK
B-200
635-BU
799-WH
799-WH
636-GN
2
2
1
1
BK
BK
RD
RD
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
K
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
DD
NOTE C: TAPE BACK CIRCUITS D984-GN AND 202-BK
102-8963
5T-8598
E-142A-6494GG
B-15102-8856HH
C-155T-9326
8W-0639
2A-6492
CABLE AS.
5T-4666
2A-6820
Z
X
W
C-5
C-5
E-1
7T-3418
5T-8887
6G-9462
6T-4300
6T-4301
2A-6819
8W-1801
2A-6818
8X-9992
102-9095
5T-8888
2A-6817
2A-6777
102-8602
A-6
NOTE B: NORMALLY CLOSED WHEN DOOR OPEN
E-4
A-2
A-2
CC
BB
AA
WIRE AS.
A-13
A-14
B-1
F-2
D-4
C-9
D-13
B-13
B-13
B-12
B-12
B-11
V
U
T
S
R
Q
105-BR
N
M
L
K
J
H
G
F
E
D
C
B-8
01
A
HARNESS AS.
LOCPART NO.IDENT
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAGE
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
AND XMSN SHIFTER IN NEUTRAL
202-BK
DIAG ENABLE SW
6T-6066
2
308-YL
109-OR-4
1
1
2
2
WH-18
BK-18
RD-18
T
426-BR
T
315-GN-12
446-PU-14
J
9
201-BK
201-BK
200-BK-14
200-BK
200-BK
A489-BU
DD
GG
604-OR
103-YL
STOP
LAMP SW
2M-9346
202-BK
BRAKE
SYSTEM
AIR SW
9G-8009
408-WH
201-BK
472-OR
201-BK
720-PU
202-BK
PARKING
BRAKE SW
3T-3195
SECONDARY
BRAKE SW
3T-3195
SECONDARY/PARKING
BRAKE TEE
707-PU
636-GN
799-WH
SERVICE/RETARDER
BRAKE TEE
767-WH
767-WH
772-BR
706-BR
202-BK
SERVICE/
RETARDER SW
3L-6306
SERVICE/
RETARDER SW
3L-6306
799-WH
123-WH
250-BK
818-BR
820-BU
819-GY
107-WH
107-WH
635-BU
720-PU
706-BR
202-BK
200-BK-14
203-BK
D741-YL
307-OR
308-YL
450-YL
02
D740-BR
A
H
BACKUP
RELAY
3T-0376
202-BK
200-BK
D985-BR
D986-PK
150-OR-14
115-PK-14
138-GN
150-OR-14
176-ORARC
ENGINE CONTROL BREAKER
6N-8589
112-PU-14 10A
150-OR-14
121-YL
612-GY
321-BR
308-YL
20A
10A
10A
10A
15A
15A
DOME, STOP &
TURN LAMP
BREAKER
9G-9487
KEY
BREAKER
9G-9487
STEERING
BLEED
BREAKER
9G-9487
112-PU-10
112-PU-10
101-RD-10
101-RD-10
FRONT FLOOD
LAMP BREAKER
3T-2662
132-PK
126-PK
113-OR
138-GN
122-BU
123-WH
TRACTION AID
XMSN CONTROL
OPERATOR MONITOR
AUTO LUBE
AIR DRYER
GAGES
112-PU-14
112-PU-14
101-RD-10
120-YL
129-PU
121-YL
CONVERTER
CIGAR LIGHTER
BACKUP ALARM
112-PU-14
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
105-BR
105-BR
103-YL
101-RD-10
101-RD-10
101-RD-10
149-PU-14
124-GN-14
139-OR-10
449-BU
307-OR
307-OR
105A
ALT BREAKER
3E-7294
L81
L81
L33
L51
L85
L80
123-WH
601-GY
16
10
20
19
18
17
15
14
13
3
7
6
5
9
4
12
11
2
1
8
H
H A
A
A
A
A
6
1
3
4
10
9
2
8
5
7
610-OR-14
2
1
BK
BK
200-BK
DIAGNOSTIC CONNECTOR
BRAKE RETRACT
BREAKER
3T-8728
MAIN
RELAY
3T-0376
LUBE
SOLENOID
5T-4434
T
LADDER LAMP
BREAKER
6N-8589
801-PK
200-BK
139-OR-10
T
K
K
H
129-PU
280-BK
109-OR-4
109-OR-4
308-YL
112-PU
308-YL
200-BK
150-OR-14
123-WH
121-YL
126-PK
15A
HEAD LAMP
(HIGH) BREAKER
3T-2662
203-BK
15A
FUSES
3K-8782
FUSE HOLDERS
4K-5122
207-BK
307-OR
AIR CONDITIONER
BREAKER
6N-8589
112-PU
102-BU-14
115-PK-14
105-BR
109-OR
308-YL
101-RD
101-RD
101-RD-10
101-RD-10
10A
10A
10A
112-PU-14
112-PU-14
112-PU-14
135-BU
210-BK
200-BK
120-YL
200-BK
123-WH
451-BR
450-YL
105-BR
601-GY
4
5
1
3
2
7
6
AA
24/12 VOLT
CONVERTER
9G-6981
RD-18
BK-18 2
1
WH/RD-18
WH/BK-18
3
2
1
+ BATTERY
GROUND
+12 VOLT
GROUND
L80
L80
202-BK
201-BK-14
200-BK-14
200-BK-8
202-BK
200-BK
200-BK-14
612-GY
105-BR
149-PU-14
109-OR-4
101-RD-4
103-YL
105-BR
115-PK-14
102-BU-14
124-GN-14
120-YL
122-BU
129-PU
138-GN
113-OR
132-PK
109-OR
601-GY
01
3
5
1
8
7
4
QQ
QQ
QQ
251-BK
HH C
605-YL
606-GY
614-PU
608-GN
200-BK
E-2
BRAKE
RETRACT
8C-9514
01
L31
WH
BK
WH
BK
GROUND
SIGNAL
+V
C
B
A
(L)
S-2
(R)
S-1
TRANSMISSION SW
6V-5828
BR-18
WH-18
OR-18
YL-18
GN-18
BU-18
BK-18
GROUND
GND VERIFY
GEAR 5
GEAR 4
GEAR 3
GEAR 2
GEAR 1
10
9
8
7
6
5
4
3
2
1
L69
UP SHIFT
SOLENOID
7X-1120
LOCKUP
SOLENOID
7X-1120
DOWN SHIFT
SOLENOID
7X-1120
PROPORTIONAL
SOLENOID
3T-0062
L62
L69
L24
L51
L85
L80
L66
L68
L67
C
608-GN
202-BK
201-BK
105-BR
120-YL
200-BK
200-BK
200-BK
200-BK
200-BK-10
777-PU-10614-PU
608-GN
604-OR
612-GY
G
F
767-WH
202-BK
5
6
1
2
3
4
QQ
769-BU
202-BK
767-WH
770-GN
7I-4732
201-BK
S
408-WH
472-OR
612-GY
231-BK
200-BK
S
WH-18
E750-PU
126-PK
BK-18
OR-18
XX
J
608-GN
612-GY
122-BU
122-BU
200-BK
200-BK-10
AIR
START
SOLENOID
5T-4434
GN
BK
E
C
306-GN
1
2
3
1
2
WH
BK
MOTOR
2
2
2
1
1
1
GROUND
SIGNAL
+V
C
B
A
GROUND
SIGNAL
+V
C
B
A
S
BK
BK
BK
U
E
E
4
1
2
3
WHEEL SPEED
SENDER
3T-2470
WHEEL
SPEED
SENDER
3T-2470
U
U
V V G
G
GGG
BACK-UP
ALARM
3T-1815
LH BACK-UP
LAMP
9X-4381
RH BACK-UP
LAMP
9X-4381
XMSN
SPEED
SENDER
3E-6955
4 WAY
SOLENOID
9G-9988
BK
767-WH
202-BK
769-BU
202-BK
767-WH
770-GN
RH STOP/
TAIL
LAMP
6V-1108
LH STOP/
TAIL
LAMP
6V-1108
LH TURN
LAMP
6V-1119
RH TURN
LAMP
6V-1119
200-BK
640-GN
606-GY
J
H
A
B
C
D
E
I
F
G
639-WH
605-YL
709-OR
710-GN
705-PK
704-GY
703-BU
721-BR
722-WH
723-OR
724-YL
725-GN
202-BK
202-BK
777-PU-10
774-YL
775-BR
773-GY
774-YL
775-BR
773-GY
202-BK
202-BK
202-BK
T
AIR DRYER
2G-2159
709-OR
710-GN
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
705-PK
704-GY
703-BU
709-OR
710-GN
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
705-PK
704-GY
703-BU
227-BK
217-BK
218-BK
219-BK
202-BK
280-BK
12
9
8
7
17
13
14
15
6
5
4
3
2
1
10
19
16
20
18
11
L65
521-YL-14
522-WH-14
122-BU
123-WH
126-PK
124-GN-14
138-GN
00
200-BK
200-BK
UNUSED
36
35
30
29
28
27
2
21
16
15
202-BK
107-WH-14
632-WH-14
631-GY-14
5
12
10
AUTO RETARDER
CONTROL
3E-3663
200-BK-8
321-BR
200-BK-14
201-BK
126-PK
JJ
308-YL
612-GY
202-BK
202-BK
202-BK
121-YL
768-OR
200-BK
149-PU-14
102-BU-14
201-BK
103-YL
801-PK
113-OR
123-WH
115-PK-14
129-PU
124-GN-14
C-6
F
L70
L61
L75
L75
L75
4
725-
724-
723-
722-
721-
L76
L76
L38
L44
L20
L20
L20
L19
L84
L84L84
L61
L62
L24
L85
L50
L52
L54
TACHOGRAPH
7D-1513
123-WH
601-GY
3
2
1
202-BK
2
H
202-BK
2A-7132QQ
801-PK
202-BK
200-BK
200-BK
200-BK
201-BK-14
201-BK
207-BK
122-BU
306-GN
608-GN
200-BK
612-GY
614-PU
103-YL
601-GY
619-GN-14
200-BK-8
441-OR
327-PK-14
115-PK-14
149-PU-14
102-BU-14
410-WH
113-OR
200-BK
+ 12V
+ BATTERY
XMSN SP
GROUND
TEST
ID CODE 3
ID CODE 2
ID CODE 1
ID CODE 0
ID CODE 4
RIGHT SP
RIGHT SOL
LEFT SOL
PROPN SOL
LEFT SP
BRAKE
2
5
19
18
17
16
13
12
11
20
15
14
10
9
8
7
6
4
3
1
5
4
3
2
1
A
D
D
04
A430-OR
00
474-WH
3
A
2
1
H
H
H
103-YL
132-PK
113-OR
105-BR
103-YL
RD
107-WH-14
00
405-GY
H
H
H
01
H
H
BK
13
14
37
18
17
149-PU-14
19
7
6
20
34
619-GN-14
149-PU-14
201-BK
121-YL
612-GY
308-YL
622-PU-14
610-OR-14
623-BU-14
607-PK-14
441-OR
113-OR
419-YL
408-WH
321-BR
614-PU
426-BR
A489-BU
124-GN-14
522-WH-14
203-BK
406-PU
412-BU
413-BR
405-GY
403-GN
201-BK
410-WH
409-OR
NC
NC
L71
L71
HH
HH
HH
HH
HH
HH
HH
102-BU-14
767-WH
132-PK
132-PK
768-OR
768-OR
202-BK
202-BK
700-PK
700-PK
215-BK
214-BK
213-BK
212-BK
216-BK
770-GN
775-BR
774-YL
773-GY
769-BU
767-WH
772-BR
33
32
31
25
E750-PU
D
L60
604-OR
103-YL
604-OR
20
19
14
4
18
2
17
10
6
8
15
12
11
1
13
9
3
16
5
7
XX
XX
8X-1211
X
X
X
X
Y
Y
Y
Y
B-5017I-4821
NOTE F: WITH AUTO RETARD, REMOVE WIRES 200-BK AND
454-GN AND TAPE BACK. CONNECT WIRES 200-BK (2)
AND D992-PU TO PRESSURE SW 4D-4785
Y
NOTE F
Y
Y
X
X
X
X
L81
X
W
WW
W
998-BR
7
2
1
818-BR
820-BU
250-BK
799-WH
819-GY
307-OR
XX
601-GY
307-OR
02
XX
315-GN-12
311-WH
200-BK-14
L53
231-
726-
L85
L66
L67
L68
L67
L66
L70
L20
L62
L24
L52
L50
L69
L68
773-GY
E
D
B
A
A
C
18
23
22
19
6
8
10
3
15
14
17
4
25
2
12
207-BK
TRANSMISSION
SUPPLY SW
9X-7781
TRANSMISSION
FILTER SW
9G-3341
426-BR
426-BR
201-BK
426-BR
T
STEERING SW
3E-7812
STEERING
BLEED
SOLENOID
6T-8046
407-PK
B
202-BK
202-BK
310-PU
GG
437-BR
B
437-BR
122-BU
306-GN
608-GN
201-BK
200-BK
606-GY
605-YL
426-BR
201-BK
417-GY
417-GY
612-GY
614-PU
2
1
200-BK
327-PK
327-PK
A
T
RIGHT
HOIST SCREEN SW
9X-7781
LEFT
HOIST SCREEN SW
9X-7781
481-GN
202-BK
767-WH
202-BK
767-WH
770-GN
769-BU
775-BR
774-YL
212-BK
213-BK
214-BK
215-BK
216-BK
A
893-GN
BK
11
1
2
3
4
9
14
5
7
6
10
13
12
8
OPERATOR STATION
407-PK
13
9
16
5
21
20
7
24
1
818-BR
437-BR
A
A
820-BU
250-BK
310-PU
200-BK-8
101-RD-4
109-OR-4
777-PU-10
202-BK
202-BK
BC
777-PU-10
DD
202-BK
TACHOMETER
8C-5471
LAMP
5D-0019
LAMP
5D-0019
STEERING
BLEED
CONTROL
9G-9287
TRACTN AID
SPEEDOMETER
GY-18
GN-18
PK-18
OR-18
YL-18
BK-18
WH-18
SPEED IN
+ BATTERY
GROUND
7
6
5
4
3
2
1
794-YL
LAMP
5D-0019
101-RD-4
01
L20
451-BR
450-YL
T
799-WH
K
A
201-BK
L64
OPERATOR
MONITOR
TEST SW
6T-6066
A
A
COOLANT
TEMP GAGE
4W-0483
BRAKE OIL
TEMP GAGE
4W-2067
123-WH
449-BU
200-BK
02
00
K
K
IGN
SEND
GRD
IGN
SEND
GRD
200-BK
B-10
PARK BRAKE
XMSN FILTER
BK AIR PR
TC/RET TEMP
FUEL FILTER
PRIM STER
COOL FLOW
COOL TEMP
NEUTRAL
+ BATTERY
GROUND
ALTERNATOR
ENG OIL PR
ALARM
LAMP
FUEL PR
TEST
11
20
19
17
202-BK
15
14
13
12
10
9
8
7
6
5
4
3
2
1
OPERATOR
MONITOR
8C-3508
A
113-OR
403-GN
426-BR
405-GY
406-PU
407-PK
408-WH
410-WH
412-BU
413-BR
437-BR
A489-BU
419-YL
409-OR
201-BK
411-PK
415-GN
L56
601-GY
601-GY
601-GY
601-GY
123-WH
123-WH
123-WH
123-WH
123-WH
123-WH
123-WH
446-PU
446-PU
200-BK
200-BK
601-GY
200-BK
200-BK
799-WH
L45
PK-18
BK-18
GN-18
LUBE SOL
GROUND
+ BATTERY
3
2
1
AUTOLUBE
CONTROL
7T-3823
107-WH-14
150-OR-14
150-OR-14
A
202-BK-18
726-BU
327-PK-14
BACKUP
LAMP SW
6T-3991
L84
451-BR
450-YL
L75
L61
L62
L56
L44
L74
310-PU
310-PU
202-BK
F
F
FA
A
A
A
201-BK
446-PU-14
799-WH
799-WH
799-WH
201-BK
415-GN
411-PK
202-BK
XMSN
SPEED
DISTRIBUTOR
3T-5438
B
BRAKE
RETRACT SW
9D-3721
21
1 2
3
32
1
BED RAISE
ID CODE 3
ID CODE 0
ID CODE 2
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
+10V
XMSN SPEED
GEAR GND VERIFY
GND VERIFY
FRONT GR 5
FRONT GR 4
FRONT GR 3
FRONT GR 2
FRONT GR 1
LKUP SOL
+ BATTERY
GROUND
UP SOL
DOWN SOL
RETARDER
BRAKE
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
24
N/C
N/O
F
DOME
LAMP
7X-6398
SERVICE
METER
3T-8325
TRACTION
AID TEST SW
4D-1836
CIGAR
LIGHTER
9W-0335
KEY SW
9G-7641
AIR
PRESSURE
GAGE
1W-3306
103-YL
200-BK
201-BK
415-GN
601-GY
A
200-BK
200-BK
A
L53
L52
481-GN
446-PU
QQ
470-PU
202-BK
202-BK
706-BR
720-PU
202-BK
202-BK
126-PK
710-GN
321-BR
121-YL
2
1
4
6
3
5
707-PU
202-BK
202-BK
202-BK
202-BK
202-BK-18
BACKUP
ALARM SW
6G-4195
SHIFT LEVER SW
9W-0681
EPTC-II
TRANSMISSION
CONTROL
3E-5390
321-BR
121-YL
202-BK
707-PU
706-BR
720-PU
126-PK
709-OR
721-BR
722-WH
723-OR
724-YL
725-GN
705-PK
704-GY
703-BU
227-BK
217-BK
218-BK
219-BK
710-GN
710-GN
737-GN
736-YL
733-BR
735-OR
734-WH
470-PU-18
716-BU-18
716-BU-18
715-GN-18
715-GN-18
714-YL-18
714-YL-18
713-OR-18
713-OR-18
711-BR-18
711-BR-18
712-WH-18
712-WH-18
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
NEUTRAL
GND VERIFY
GROUND
10
9
8
7
6
5
4
3
2
1
601-GY
200-BK
121-YL
612-GY
608-GN
L74
308-YL
326-PU
105-BR
200-BK
129-PU
767-WH
700-PK
BK
RD
123-WH
449-BU
139-OR-10
777-PU-10
201-BK
200-BK
201-BK
7E-6361
ST
ON
OFF
B
S
C
R
799-WH
27
28
36
138-GN
801-PK
200-BK
FLASHER
8D-6946
537-GN103-YL
326-PU
306-GN
200-BK
768-OR
710-GN
123-WH
449-BU
B748-BR
202-BK
DOME
LAMP SW
9D-4068
NOTE B
OR-18
WH-18
YL-18
BU-18
BK-18
RD-18
+ BATTERY
GROUND
STEER SOL
RESET
OFF (KEY)
OFF
7
6
5
4
3
2
1
103-YL
602-WH
103-YL
602-WH
103-YL
200-BK
602-WH
37
22
3
1
859-YL
R
24
26
31
32
14
40
16
21
6
7
13
39
10
8
20
2
19
200-BK
4
200-BK
30
200-BK
F
866-PK
867-PU
5
202-BK
107-WH-14
200-BK-14
F
4
ID CODE 2
ID CODE 3
5
1
2
WH-18
BK-18
YL-18
FRONT GR 1
1
4
2
3
ID CODE 1
GROUND
FRONT GR 2
+ BATTERY
OR-18
FRONT GR 3
3
6
7
BR-18
GY-18
PU-18
BU-18
RD-18
GN-18
FRONT GR 5
TRANSMISSION
GEAR INDICATOR
8C-9609
FRONT GR 4
126-PK
202-BK
733-BR
734-WH
735-OR
736-YL
737-GN
202-BK
202-BK
819-GY
L74
794-YL
636-GN
635-BU
251-BK
799-WH
A
A
306-GN
126-PK
307-OR
200-BK
470-PU
200-BK
NEUTRAL
5
632-WH-14
631-GY-14
202-BK
E750-PU
L64
L64
L64
126-PK126-PK
C972-YL
207-BK
1
3
GN-18
BK-18
PU-18
OR-18
1
4
2
3
START RELAY
GROUND
START SW
+ BATTERY
WH-18
BR-18
132-PK
768-OR
799-WH
L30
207-BK
H
L51
L50
L11
L11
H
J
JA
A
L45
START AID SW
8C-9812
2
6
7
105-BR
8
+
998-BR
997-OR
9
993-BR
B
109-OR-4
H
H
A
A
201-BK
L26
L26
YL-18
OR-18
BU-18
GY-18
311-WH
607-PK-14
PK-18
610-OR-14
622-PU-14
149-PU-14
614-PU
410-WH
103-YL
201-BK
231-BK
726-BU
3
4
5
9
8
7
1
2
6
210-BK
135-BU
623-BU-14
200-BK
102-BU-14
115-PK-14
619-GN-14
601-GY
2
8
9
3
6
1
7
4
5
997-OR
XX
513-OR-14
229-BK-14
XX
XX
XXXX
XX
XX
XX
XX
XX
XX
XX
XX
XX
522-WH-14
513-OR-14
521-YL-14
481-GN
403-GN
407-PK
XX
XX
XX
XX
XX
451-BR
202-BK
201-BK
F-1/B-2
L49
GN-18
L26
200-BK-14
405-GY
L54
202-BK
L80
777-PU-10
L54
BK-4
200-BK-10
200-BK-8
OPERATOR STATION
MODE
TEST/SET
BRAKE OIL
SENDER
8N-3844
101-RD-4
BK-4
521-YL-14
200-BK-14
200-BK-14
200-BK-14
LA
LADDER
LAMP SW
4D-1836
JJ
CHG
102-BU-14
6
5
9
8
12
11
3
2
LAMP
5D-0019
893-GN
892-BR
892-BR
893-GN
D996-PU
D997-YL
D996-PU
D997-YL
413-BR
202-BK
SS
SS
TO
CAB
NEUTRAL
L73
Q B
LL
LA
E-201
LADDER
FLOOD
LAMP
3T-4411
LCD LATCH
TO
FRAME
406-PU
409-OR
OPR PANEL
200-BK-14
SERVICE
TOOL
CONNECTOR
SERVICE
SET SW
9D-3721
SERVICE
CLEAR SW
9D-3721
202-BK
103-YL
NEUTRAL/START
CONTROL
7X-1362
200-BK
200-BK
891-BU
J
H
G
F
E
D
C
B
A
ENGINE
CONTROL
FAULT LAMP
7N-5876
BASE
2G-0151
ENGINE
OVERSPEED
ALARM
9G-9813
ENGINE
OVERSPEED
LAMP
7N-5876
BASE
2G-0151
ENGINE
AIR FILTER
LAMP
7N-5876
BASE
2G-0151
308-YL
BU
820-BU
PU
BK
200-BK
200-BK
PYLD MNTR
105-BR
201-BK
L33
L33
201-BK
201-BK
201-BK-14
631-GY-14
632-WH-14
619-GN-14
611-PU-14
620-WH-14
620-WH-14
620-WH-14
L45
539-BU
614-PU
200-BK
200-BK-14
614-PU
614-PU
SIGNAL
+B
GROUND
9
8
7
6
5
4
3
2
1
00
2
4
3
5
200-BK-14
1
2
200-BK-14
7
6
A
C
C
THROTTLE
POSITION
SENSOR
3E-5400
ATMOSPHERIC
PRESSURE
SENSOR
6V-1926
GN-18
YL-18
OR-18
A
308-YL
A
307-OR
250-BK
819-GY
20A
GROUND
+V
SIGNAL
799-WH
9
FOG
LAMP
9X-7165
632-WH-14 632-WH-14
631-GY-14631-GY-14
631-GY-14
FOG LAMP SW
6T-3989
614-PU
614-PU
115-PK-14 103-YL
632-WH-14
631-GY-14
103-YL
23
LCD CLOCK
TX LCD OUT
+24V (OUT)
PU
4
2
38
12
15
3
1
601-GY
ENGINE FLOOD
LAMP SW
8D-2676
149-PU-14
T
SPEEDOMETER
3T-3408
PANEL
LAMP
7N-5876
203-BK
L20
D
607-PK-14
149-PU-14
149-PU-14
C
B
A
L
Q
200-BK-14
1
200-BK-14
619-GN-14
611-PU-14
L
622-PU-14
623-BU-14
200-BK-14
LOW BEAM
HEAD LAMP
9X-7165
HIGH BEAM
HEAD LAMP
9X-7166
619-GN-14
623-BU-14
622-PU-14
607-PK-14
539-BU
611-PU-14
540-WH
614-PU
607-PK-14
L45
JJ
521-YL-14
200-BK-14
611-PU-14
251-BK
7I-5124
Q
22
L19
446-PU-14
L38
J
R
A
A
201-BK
17
103-YL
201-BK
201-BK
201-BK
799-WH
A
201-BK
201-BK 201-BK
GROUND
16 201-BK
11
149-PU-14
M
M
M
200-BK
6 5
9
8
12
11
3
2
2
1
DIMMER
RESISTOR
3T-3437
3
2 1
32
3
21
TURN
SIGNAL SW
9G-5589
18
BASE
2G-0151
200-BK
202-BK
200-BK
200-BK
D992-PU
D991-OR
202-BK
123-WH
L32
449-BU
601-GY
202-BK
D989-BU
BASE
2G-0151
A
26
29
35
11
25
2
601-GY
799-WH
202-BK
33
M
34
23
200-BK-14
522-WH-14
521-YL-14
124-GN-14
2
4
3
1
RETARDER
LAMP
7N-5876
ACTION
LAMP
7N-5876
201-BK
415-GN
411-PK
RIGHT
TURN
LAMP
7N-5876
601-GY
HIGH BEAM
INDICATOR
LAMP
7N-9967
200-BK
200-BK
200-BK
200-BK
LEFT
TURN
LAMP
7N-5876
BASE
2G-0151
540-WH
539-BU
IGN
SEND
GRD
T
PANEL
LAMP
7N-5876
BASE
2G-0151
202-BK
D988-WH
RETARDER LIGHT SW
4D-4785
ARC CONTROL
VALVE
3E-8691
AUTO RETARD PRESS SW
9W-0263
410-WH
201-BK
123-WH
446-PU-14
540-WH
539-BU
611-PU-14
201-BK
415-GN
411-PK
441-OR
A
A
201-BK18
GROUND
LADDER
LAMP SW
6T-3991
DOME
LAMP SW
6T-3990
PANEL
DIMMER SW
6T-3991
RUNNING
LAMP SW
6T-3989
607-PK-14
210-BK
135-BU
602-WH
200-BK
103-YL
200-BK
622-PU-14
623-BU-14
601-GY
601-GY
614-PU
619-GN-14
610-OR-14
103-YL
115-PK-14
102-BU-14
103-YL
600-BR
601-GY
614-PU
102-BU-14
601-GY
2A-7119
M
M
M
PANEL
LAMP
7N-5876
202-BK
8
124-GN-14
522-WH-14
200-BK-14
521-YL-14
200-BK-14
124-GN-14
601-GY
522-WH-14
540-WH
539-BU
605-YL
606-GY
604-OR
537-GN
2
3
6
5
4
1
1 4
5
6
2
3
441-OR
201-BK
HEAD LAMP
DIMMER SW
2H-1855
149-PU-14
623-BU-14
622-PU-14
607-PK-14
203-BK
619-GN-14
614-PU
610-OR-14
611-PU-14
611-PU-14
OPERATOR STATION
515-GY-14
CAT DATA LINK -
CAT DATA LINK +
START/BKUP RETURN
SERVICE CLEAR
SERVICE SET
START SWITCH
NEUTRAL (TPMC)
NEUTRAL (EMS)
BACKUP ALARM RELAY
START RELAY
HOLD
ID CODE 4
SPARE
BODY UP SW
PART THROTTLE
ID CODE 1
2
8
27
28
7
6
20
1
9
21
22
23
24
25
26
3
4
5
37
LADDER
FLOOD
LAMP
3T-4411
B
N
J
FAULT
ALARM
9G-9813
2
1
BK
RD
201-BK
410-WH
997-OR
997-OR
993-BR
17
454-GN
18
19
10
36
30
31
32
33
34
35
123-WH
123-WH
412-BU
306-GN
403-GN
138-GN
138-GN
138-GN
614-PU
311-WH
29
11
12
113-OR
13
YL
OR
BK
WH
PK
PU
RD
BR
GN
BU
14
J
202-BK
202-BK
202-BK
202-BK
15
XX
2
1 539-BU
614-PU
L27
200-BK-14
521-YL-14
124-GN-14
522-WH-14
RS
3
4
1
2
5
RESISTOR
9G-1950
200-BK-14
522-WH-14
BASE
2G-0151
2
1
T
R
R
2
2
1
1
5
4
3
2
1
BLOWER SW
6P-3236
THERMO SW
3E-5465
517-BU-14
516-GN-14
515-GY-14
521-YL-14
124-GN-14
BLOWER
9G-8693
BLOWER
9G-8697
BK-14
BK-14
WH/RD-14
WH/RD-14
MOTOR
MOTOR
515-GY-14
200-BK-14522-WH-14
200-BK-14
515-GY-14
521-YL-14
124-GN-14
515-GY-14
200-BK-14
202-BK
202-BK
202-BK
12V AUX
POWER
A-8018C-9677
FOG
LAMP
9X-7165
201-BK
A
113-OR
113-OR
TRACTION
AID
CONTROL
3T-0529
201-BK
201-BK
201-BK
200-BK
601-GY
200-BK
200-BK
601-GY
TORQUE CONVERTER
INLET FILTER SW
7N-4447
105-BR
105-BR
105-BR105-BR
200-BK
403-GN
403-GN
327-PK-14
470-PU-18
ZZ
STRAP AS. 8X-6418
16
539-BU
L76
614-PU614-PU
539-BU
454-GN
BR
B
LOW BEAM
HEAD LAMP
9X-7165
HIGH BEAM
HEAD LAMP
9X-7166
PARK/TURN
LAMP
3T-3967
PARK/TURN
LAMP
3T-3967
2 2
1 1
BRBR
RD RD
X
NN
539-BU
614-PU
L11
L12
GG
J
2
1
DISCONNECT SW
7N-0718
202-BK
CCAA
3
THIS SCHEMATIC IS FOR THE 785B TRUCK (3E-8712 CHG 00)
L26
A
BR
SS
SS
L10
306-GN
126-PK
818-BR
L6
L6
L2
L2
L2
L3
L5
112-PU-10
112-PU-10
450-YL
112-PU-10
L9
L9
L9
A
TO
BLOCK
LL
LL
200-BK-2
C
ZZ
ZZ
522-WH-14
513-OR-14
L64
00
A
A-2047E-5342YY
8X-0596
L64
ENGINE
CONTROL
9X-9971
619-GN-14
200-BK-14
L1
RECEPT AS. (16)
9X-0352
A
A
200-BK-14
200-BK-14
OPERATOR STATION
RH ENGINE
FLOOD
LAMP
6N-7989
LH ENGINE
FLOOD
LAMP
6N-7989
12V BATTERY
3T-5760
12V BATTERY
3T-5760
620-WH-14
BK-4
101-RD-4
BK-4
BK-4
00MM 7G-1060
8
200-BK-14
C
200-BK-14
202-BK
BB
200-BK-14
FOG
LAMP
9X-7165
203-BK
NEG POSNEG POS
- +
BED
RAISE
SW
8C-5681
200-BK
200-BK
200-BK
HH
202-BK
202-BK
202-BK
202-BK
MM
CCC
CCC
2
4
3
1
BK
AAA DDD
NOTE: FOR USE ON
MACHINES WITHOUT
A/C.
2
1
Q
3
1
4
2
200-BK-14
L4
200-BK-14
102-BU-14
200-BK-14
102-BU-14
3
4
2
1
632-WH-14
200-BK-14
632-WH-14
200-BK-14
L4
L4
Y B-1/E-1007I-5382
04
02 B-68W-3843RR
B-68W-3844SS
ATCH
NOTE D: TAPE BACK CIRCUIT 200-BK-14
Q
Y
Y
200-BK-14
L4
L4
L5
200-BK-14
1
2
1
3
4
200-BK-14
631-GY-14
200-BK-14
631-GY-14
102-BU-14
102-BU-14
Q
Y
200-BK-14
NOTE D
419-YL
475-BR
202-BK
200-BK
200-BK
419-YL
475-BR
L8
L8
L8
L8
TURBO INLET LEFT
D772-PU
A746-PK
997-OR
993-BR
A
B
C
OR-18
YL-18
GN-18
+V ANALOG
SIGNAL
ANALOG RET
TURBO
OUTLET
PRESSURE
SENSOR
6V-1944
XX
997-OR
D772-PU
620-WH-14
620-WH-14
L8
2
1
Z
RD
RD
311-WH
B926-GY
RESISTOR
9X-9584
1
2
310-PU
311-WH
310-PU
311-WH
B Z
2
3
1
START AID
CONTROL
9X-3207
+ BATTERY
SOLENOID
GROUND
RD-18
WH-18
BK-18
310-PU
B926-GY
311-WH
Z
2
1
BU
BK
310-PU
B926-GY
START AID
SOLENOID
9X-7137
L8
Z
620-WH-14
620-WH-14
620-WH-14
200-BK-14
631-GY-14
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
EMS CIRCUIT.
TRACTION AID CONTROL CIRCUIT.
AUTOMATIC RETARDER CONTROL CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE CONTROL CIRCUIT.
TURN SIGNAL CIRCUIT.
PAYLOAD MONITOR CIRCUIT.
START AID CIRCUIT.
TRANSMISSION CONTROL CIRCUIT.
