©
1990 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR4286
May 1990
789 Truck
Electrical System
9ZC440-UP
Vehicle
Location
Component
Schematic
Location
Vehicle
Location
Component
Schematic
Location
1 Alarm - Backup A-12 24 Solenoid - Up Shift A-11
B Alarm - Engine Overspeed C-4 B Speedometer C-3
C Alarm - Ether Out D-5 29 Switch - Aftercooler Temp (EMS) A-6
G Alarm - Fault (EMS) C-2 30 Switch - Agent Press (Fire) A-1
G Alarm - Fire C-1 31 Switch - Agent Press (Fire) E-2
2 Alternator A-3 C Switch - Backup Alarm E-4
3 Batteries A-2 C Switch - Backup Lamp D-5
D Breakers - Circuit E-11 A Switch - Blower C-3
C Control - Autolube E-6 D Switch - Body Raise (Trans) C-9
F Control - Automatic Fire Suppression D-2 Switch - Brake Master Cylinder
C Control - Engine Shutdown E-6 Overstroke (EMS)
E Control- Ether D-12 Switch - Brake Master Cylinder
C Control - Neutral/Start F-4 Overstroke (EMS)
E Control - Payload Monitor D-10 Switch - Brake Master Cylinder
E Control - Traction Aid D-9 Overstroke (EMS)
C Control - Transmission E-5 11 Switch - Brake Oil Temp (EMS) B-9
E Converter - 24/12 Volt C-12 C Switch - Brake Retract D-5
C Distributor - Transmission E-6 E Switch - Brake System Air Press (EMS) C-11
4 Dryer - Air B-11 34 Switch - Converter/Retarder Temp (EMS) A-7
C Flasher F-5 35 Switch - Disconnect A-2
D Fuses D-11 G Switch - Dome Lamp D-2
B Gauge - Brake Oil Temp D-4 A Switch - Dome Lamp F-4
B Gauge - Engine Coolant Temp D-4 36 Switch - Engine Coolant Flow (EMS) A-3
C Ground - Cab D-5 12 Switch - Engine Coolant Temp (EMS) A-3
E Ground - Cab E-10 37 Switch - Engine Flood Lamp E-1
5 Ground - Cab/Frame B-9 38 Switch - Engine Oil Press (EMS) A-6
2 Ground - Engine (Alternator) A-3 38 Switch - Engine Oil Press (Serv Meter) A-6
6 Ground - Frame B-6 B Switch - Engine Overspeed Test D-5
7 Ground - Frame/Engine A-9 26 Switch - Ether Bottle 1 Reset A-5
B Indicator - Transmission Gear E-5 26 Switch - Ether Bottle 2 Reset A-4
B Lamp - Engine Overspeed Warning C-5 27 Switch - Ether Bottle 3 Reset A-4
C Lamp - Ether 1 Out E-5 27 Switch - Ether Bottle 4 Reset A-4
C Lamp - Ether 2 Out D-5 39 Switch - Fire Detection Temp A-3
B Lamp - Master Fault (EMS) D-3 39 Switch - Fire Detection Temp A-4
B Lamp - Retarder (Warning) D-3 39 Switch - Fire Detection Temp A-7
C Meter - Service D-6 39 Switch - Fire Detection Temp B-2
8 Module - Stop/Tail Lamp B-11 39 Switch - Fire Detection Temp B-3
F Monitor - Engine Overspeed D-5 G Switch - Fog Lamp D-2
G Monitor - Fire Suppression E-2 40 Switch - Fuel Filter Press (EMS) B-5
B Monitor - Operator (EMS) D-5 40 Switch - Fuel Press (EMS) B-5
9 Motor - Brake Retract B-11 A Switch - Headlight Dimmer F-3
A Motors - Blower C-2 C Switch - Key D-5
B Panel - Payload Monitor Operator C-4 37 Switch - Ladder Lamp D-1
10 Pickup - Engine Speed (Tach/Eng Ovrspd) A-3 G Switch - Ladder Lamp D-2
E Relay - Backup E-12 41 Switch - Left Hoist Screen Press (EMS) A-7
E Relay - Main E-12 42 Switch - Nitrogen Actuator Press (Fire) E-2
A Resistor - Blower Speed C-3 E Switch - Nitrogen Actuator Press (Fire) F-9
G Resistor - Dimmer D-2 B Switch - Operator Monitor Test (EMS) C-4
11 Sender - Brake Oil (Gauge) B-8 G Switch - Panel Dimmer E-2
12 Sender - Engine Coolant Temp (Gauge) A-3 E Switch - Parking Brake Press (EMS) C-12
13 Sender - Transmission Speed A-10 43 Switch - Refrigerant Press (AC) B-2
14 Sender - Wheel Speed (Tractn) A-12 B Switch - Retarder Press (Warning) E-3
15 Sender - Wheel Speed (Tractn) B-12 41 Switch - Right Hoist Screen Press (EMS) A-7
12 Sensor - Engine Coolant Temp (Ether) B-2 G Switch - Running Lamp E-2
16 Sensor - Engine Speed (Ether) B-2 E Switch - Secondary Brake Press (Trans) C-12
17 Sensor - Left Front Strut Press (Payld) A-4 E Switch - Service/Retarder Press (Tractn) C-11
18 Sensor - Left Rear Strut Press (Payld) A-9 E Switch - Service/Retarder Press (Trans) C-11
19 Sensor - Right Front Strut Press (Payld) A-4 C Switch - Shift Lever E-5
20 Sensor - Right Rear Strut Press (Payld) A-9 44 Switch - Steering Press (EMS) A-8
21 Solenoid - 4 Way B-11 E Switch - Stop Lamp Press (Module) C-10
22 Solenoid - Air Conditioner Clutch A-2 Switch - System Test/Disable/Manual
23 Solenoid - Air Start B-10 (Ether)
24 Solenoid - Down Shift A-11 A Switch - Thermostat C-3
25 Solenoid - Engine Shutdown A-3 45 Switch - Torque Converter Inlet Filter (EMS) A-7
26 Solenoid - Ether 1 A-2 Switch - Torque Converter Outlet Screen
26 Solenoid - Ether 2 A-2 (EMS)
27 Solenoid - Ether 3 A-2 C Switch - Traction Aid Test D-5
27 Solenoid - Ether 4 A-2 47 Switch - Transmission A-10
24 Solenoid - Lockup A-10 48 Switch - Transmission Filter (EMS) A-8
E Solenoid - Lube D-11 48 Switch - Transmission Supply (EMS) A-8
E Solenoid - Nitrogen Actuator (Fire) F-8 A Switch - Turn Signal F-3
21 Solenoid - Proportional B-11 D Tachograph F-9
28 Solenoid - Steering Bleed (Eng Shtdwn) A-7 B Tachometer D-4
Vehicle locations are repeated for components located close together.
D = Components behind seat.
A = Components in operators compartment.
E = Components in rear compartment.
B = Components in dash.
F = Components in front compartment.
C = Components in console.
G = Components in headliner
Component Location Chart
32 A-8
33 A-9
46 A-7
33 A-9
C E-5
Off Vehicle Switch Specifications
Part No. Function Actuate Deactuate Normal Condition
2M9346 Stop Lamp Press (Module)
45kPaMAX
(6.5 psi MAX)
5 kPaMIN
(0.5 psi MIN)
N.O.
3L6306
Service/Retarder Press (Tractn)
Service/Retarder Press (Trans)
55.2 ± 13.8 kPa
(8 ± 2 psi)
-
-
N.C.
3T3195
Parking Brake Press (EMS)
Secondary Brake Press (Trans)
656 ± 35 kPa
(95 ± 5 psi)
552 ± 35 kPa
(80 ± 5 psi)
N.O.
3T9343
Torque Converter Outlet Screen (EMS)
Transmission Supply (EMS)
210 ± 70 kPa
(30 ± 10 psi)
-
-
N.O.
4D4785 Retarder Press (Warning)
27.6 ± 3.4 kPa
(4.0 ± .5 psi)
-
-
N.O.
6T6085 Nitrogen Actuator Press (Fire)
1930 ± 138 kPa
(279.5 ± 20.0 psi)
1655 ± 138 kPa
(240.5 ± 20.0 psi)
N.O.
6T7663
Engine Oil Press (EMS)
Engine Oil Press (Serv Meter)
93 ± 21 kPa
(13.5 ± 3.0 psi)
69 ± 21 kPa
(10.0 ± 3.0 psi)
N.O.
7N4447
Fuel Filter Press (EMS)
Torque Converter Inlet Filter (EMS)
119 ± 14 kPa
(17.0 ± 2.0 psi)
-
-
N.C.
7N7854
Brake Oil Temp (EMS)
Converter/Retarder Temp (EMS)
123.89 ± 2.78°C
(255 ± 9°F)
112.78°C MIN
(235°F MIN)
N.C.
7N9785 Engine Coolant Temp (EMS)
107.2 ± 2.8°C
(225 ± 5°F)
91.0°C MIN
(196°F MIN)
N.C.
7T4785 Fire Detection Temp
193.3 ± 8°C
(380 ± 15°F)
- N.O.
8C5436 Agent Press (Fire)
2270 kPa MAX
(330 psi MAX)
1655 ± 138 kPa
(240 ± 20 psi)
N.O.
8N1425 Aftercooler Temp (EMS)
82.2 ± 2.8°C
(180 ± 9°F)
74°C MIN
(165°F MIN)
N.C.
9G3341 Transmission Filter (EMS)
51.7 ± 2.8°C
(125 ± 5°F)
43.0°C MIN
(110°F MIN)
N.C.
9G8009 Brake System Air Press (EMS)
517 ± 35 kPa
(75.0 ± 5.0 psi)
448±35kPa
(65.0 ± 5.0 psi)
N.O.
9W3187 Fuel Press (EMS)
93 ± 21 kPa
(13.5 ± 3.0 psi)
69 ± 21 kPa
(10.0 ± 3.0 psi)
N.C.
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)
N.O.
9X7781 Hoist Screen Bypass Press (EMS)
210±70kPa
(30 ± 10 psi)
-
-
N.O.
9X8199 Steering Press (EMS)
8963 ± 1379 kPa
(1300 ± 200 psi)
6890 ± 345 kPa
(1000 ± 50 psi)
N.C. & N.O.
Connectors
Vehicle
Location
Harness And/Or Components
Schematic
Location
Connectors
Vehicle
Location
Harness And/Or Components
Schematic
Location
F - 8W7984 A - 8X5294
Transmission Control F - 8W7984
ZZ - 8X5017 A - 8X5294
Ether Control K - 5T8599
A - 8X5294 A - 8X5294
B - 8X6189 T - 6G9462
YY - 8X3704 A - 8X5294
ZZ - 8X5017 W - 8W0638
A - 8X5294 B - 8X6189
C - 8X6369 LL - 8W3048
A - 8X5294 E - 5T9412
Diagnostic Connector U - 5T9411
A - 8X5294 QQ - 8W3841
Operator Monitor (EMS) SS - 8W3844
D - 5T8598 X - 8W0708
Traction Aid Control Fire Detection Switch
F - 8W7984 X - 8W0708
G - 8W9931 Fire Detection Switch
W - 8W0638 X - 8W0708
Fire Suppression Control Fire Detection Switch
D - 5T8598 X - 8W0708
E - 5T9412 Fire Detection Switch
W - 8W0638 A - 8X5294
X - 8W0708 D - 5T8598
A - 8X5294 A - 8X5294
H - 5T8619 UU - 8W7193
F - 8W7984 A - 8X5294
Shift lever Switch WW - 8X6292
G - 8W9931 AAA - 8X5014
V - 7T3418 YY - 8X3704
V - 7T3418 AAA - 8X5014
Transmission Switch YY - 8X3704
A - 8X5294 NN - 8X5293
J - 8W0639 YY - 8X3704
A - 8X5294 R - 6T4301
J - 8W0639 S - 6T4300
A - 8X5294 QQ - 8W3841
K - 5T8599 Customer Data Connector
A - 8X5294 A - 8X5294
Neutral/Start Control QQ - 8W3841
A - 8X5294 A - 8X5294
ZZ - 8X5017 R - 6T4301
L - 8W0637 B - 8X6189
Q - 8W0640 C - 8X6369
A - 8X5294 E - 5T9412
H - 5T8619 4 Way Solenoid
C - 8X6369 F - 8W7984
HH - 8X2286 Body Raise Switch
QQ - 8W3841 F - 8W7984
Payload Monitor Operator Panel Transmission Gear Indicator
UU - 8W7193 HH - 8X2286
Engine Overspeed Monitor Stop/Tail Lamp Module
UU - 8W7193 QQ - 8W3841
Engine Overspeed Monitor RR - 8W3843
A - 8X5294
DD - 5T9326
A - 8X5294
Engine Shutdown Control
A - 8X5294
L - 8W0637
A - 8X5294
L - 8W0637
A - 8X5294
Transmission Speed Distributor
BB - 8W0636
Fire Suppression Monitor
F - 8W7984
Transmission Gear Indicator
Vehicle locations are repeated for connectors located close together.
* = Connector is located at the component.
E = Connectors in rear compartment.
B = Connectors behind dash.
F = Connectors in front compartment.
C = Connectors in console.
H = Connectors on rear compartment sidewall.
D = Connectors behind seat.
D-9
E-5
B-11
B-4
D-6
D-3
A-7
B-11
A-5
A-11
C-3
D-11
C-9
E-4
C-10
A-4
A-3
A-6
B-2
B-3
*
*
F-6
E-4
E-3
C-6
A-6
A-11
B-4
*
D
F
C
*
*
*
*
*
B
B
*
*
*
*
*
*
B
*
*
8
*
*
E-6
E-2
E-5
*
*
D
*
C-12
E-6
F-2
F-2
B-12
C-4
D-4
D-4
F-4
D-12
E-1
E-10
A-10
C-6
C-6
D-3
B-8
D-10
E-5
A-10
5 Contacts
4 Contacts
E-5
E-12
B-7
B-12
B-8
F-10
D-4
D-9
10 Contacts
9 Contacts
8 Contacts
7 Contacts
24 Contacts
20 Contacts
14 Contacts
12 Contacts
Harness Connector Location Chart
37 Contacts
30 Contacts
25 Contacts
6 Contacts
B-10
D-2
B-9
*
Wire Description Chart
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits
Lighting Circuits
101
RD
BATTERY
600
BR
DASH LAMP BASIC
102
BU
HEAD LAMP
601
GY
DASH LAMP HI
103
YL
AUX CKT
602
WH
DOME LAMP
105
BR
KEY SW
604
OR
STOP LAMP
107
WH
ENG SHUT-DOWN/AUTO FIRE SUPPR CONT
605
YL
TURN LAMP- LEFT
109
OR
ALTERNATOR OUTPUT (+)TERM
606
GY
TURN LAMP- RIGHT
112
PU
MAIN POWER RELAY OUTPUT
607
PK
FLOOD LAMP- FRONT
113
OR
OPR MON PANEL/VMIS B+ SWITCHED
608
GN
FLOOD LAMP- REAR
115
PK
AUX CKT
610
OR
HEAD LAMP BASIC
120
YL
AUX CKT
611
PU
HEAD LAMP HI
121
YL
BACKUP ALARM/LAMP
612
GY
BACKUP LAMP
122
BU
AUX CKT
614
PU
PARK/TAIL/DASH LAMP
123
WH
AUX CKT
619
GN
HEAD LAMP LO
124
GN
A/C
620
WH
FLOOD LAMP- FRONT (ENG FLOOD LAMP)
126
PK
XMSN CONT
622
PU
FLOOD LAMP 3-WAY SW JUMPER
129
BU
AUX CKT
623
BU
FLOOD LAMP 3-WAY SW JUMPER
132
PK
AETA CONT
631
GY
FOG LAMP - RIGHT
135
BU
AUX CKT
632
WH
FOG LAMP - LEFT
138
GN
AUTO LUBE PUMP/PAYLOAD MON
635
BR
TURN SIGNAL COMMON
139
OR
AUX CKT
635
BU
PAYLOAD MON RED LAMP
149
PU
AUX CKT
636
GN
PAYLOAD MON GREEN LAMP
639
WH
LEFT HAND STOP/TAIL LAMP
200
BK
MAIN CHASSIS
640
GN
RIGHT HAND STOP/TAIL LAMP
201
BK
OPR MON PANEL/VMIS/CMS
202
BK
XMSN CONT
700
PK
AETA TEST SW
203
BK
CHASSIS DIAGNOSTIC
703
BU
XMSN UP SOL
207
BK
STARTER DIAGNOSTIC
704
GY
XMSN DOWN SOL
209
BK
FIRE SUPP SYSTEM GROUND
705
PK
XMSN LCL SOL BASIC
210
BK
CONVERTER OUTPUT (24/12 VOLT)
706
BR
XMSN RETARDER SW
212
BK
AETA CODING PIN 16
707
PU
XMSN BED RAISE SW
213
BK
AETA CODING PIN 17
709
OR
XMSN PICKUP POWER
214
BK
AETA CODING PIN 18
710
GN
XMSN SPEED PICKUP SIGNAL
215
BK
AETA CODING PIN 19
711
BR
XMSN LEVER CODE 1
216
BK
AETA CODING PIN 20
712
WH
XMSN LEVER CODE 2
217
BK
XMSN CODING PIN 17
713
OR
XMSN LEVER CODE 3
218
BK
XMSN CODING PIN 18
714
YL
XMSN LEVER CODE 4
219
BK
XMSN CODING PIN 19
715
GN
XMSN LEVER CODE 5
226
BK
HYD OIL TEMP SENSOR
716
BU
XMSN LEVER CODE 6
227
BK
XMSN CODING PIN 37
720
PU
XMSN BRAKE SW
231
BK
XMSN SW
721
BR
XMSN GEAR CODE 1
237
BK
KBI ETHER CONT GROUND
722
WH
XMSN GEAR CODE 2
245
BK
ETHER CONT HARNESS CODE 0
723
OR
XMSN GEAR CODE 3
246
BK
ETHER CONT HARNESS CODE 1
724
YL
XMSN GEAR CODE 4
247
BK
ETHER CONT HARNESS CODE 2
725
GN
XMSN GEAR CODE 5
248
BK
ETHER CONT HARNESS CODE 3
726
BU
XMSN GEAR CODE 6
250
BK
PAYLOAD MON- CUSTOMER GROUND
733
BR
SWITCHING GEAR CODE 1 FRONT
251
BK
PAYLOAD MON- SYSTEM GROUND
734
WH
SWITCHING GEAR CODE 2 FRONT
735
OR
SWITCHING GEAR CODE 3 FRONT
306
GN
STARTER RELAY COIL TO NEUT START SW OR
736
YL
SWITCHING GEAR CODE 4 FRONT
KEY SW
737
GN
SWITCHING GEAR CODE 5 FRONT
307
OR
KEY SW TO NEUT START SW OR VMIS SENSOR
767
WH
AETA PICKUP POWER
MODULE
768
OR
AETA PICKUP XMSN
308
YL
MAIN POWER RELAY COIL
769
BU
WHEEL SPEED PICKUP LEFT
310
PU
START AID SW TO START AID SOL
770
GN
WHEEL SPEED PICKUP RIGHT
311
WH
START AID SOL TO TEMP SW
772
BR
AETA RETARDER SW
315
GN
START AID BKR TO START AID RELAY
773
GY
AETA SERVOVALVE
317
YL
START AID RELAY TO START AID SOL
774
YL
AETA SOL - LEFT
321
BR
BACKUP ALARM/LAMP/TRAVEL ALARM
775
BR
AETA SOL - RIGHT
326
PU
KEY SW "C" TERM
777
PU
BRAKE RELEASE MOTOR
327
PK
SHUTDOWN SOL
794
YL
PAYLOAD MON XMSN SPEED
328
OR
SHUTDOWN MODULE "OFF"
799
WH
SENSOR POWER
334
BU
START AID SOL #2
801
PK
AUTO LUBE SOL
335
BR
START AID SOL #3
803
BU
AUTO FIRE SUPPR SYSTEM SW POWER
336
GY
START AID SOL #4
807
BR
AUTO FIRE SUPPR NITROGEN SW TO CONT
808
PU
AUTO FIRE SUPPR NITROGEN SW TO NITROGEN
400
GN
SERVICE METER SW
SW
403
GN
ALTERNATOR (R) TERM
809
GN
AUTO FIRE SUPPR SYSTEM WARNING CKT
405
GY
OPR MON OIL PRESS (LO SETTING)
810
BU
AUTO FIRE SUPPR SYSTEM FAILURE CKT
406
PU
OPR MON COOLANT TEMP
811
GY
AUTO FIRE SUPPR TEST CKT
407
PK
OPR MON CONVERTER/RETARDER OIL TEMP
812
GN
AUTO FIRE SUPPR NITROGEN ACTUATOR SOL
408
WH
OPR MON BRAKE PRESS (AIR)
813
PK
AUTO FIRE SUPPR AGENT CYLINDER SW TO
409
OR
OPR MON NEUT
NITROGEN SW
410
WH
OPR MON FAULT ALARM
814
YL
AUTO FIRE SUPPR AGENT SW TO AGENT SW
411
PK
OPR MON MASTER FAULT LAMP
816
BR
AUTO FIRE SUPPR ALARM
412
BU
OPR MON COOLANT FLOW
818
BR
SERIAL DATA (TRANSMIT)
413
BR
OPR MON FUEL PRESS
819
GY
SERIAL DATA (RECEIVE)
415
GN
OPR MON TEST SW
820
BU
TRANSMIT KEY
417
GY
PRIMARY STER SW
858
GY
PAYLOAD MON RIGHT FRONT SENSOR
418
WH
OPR MON OIL PRESS (HI SETTING)
859
YL
PAYLOAD MON LEFT FRONT SENSOR
419
YL
OPR MON PARKING BRAKE
860
PK
PAYLOAD MON RIGHT REAR SENSOR
426
BR
OPR MON POWER TRAIN OIL FILTER
861
PU
PAYLOAD MON LEFT REAR SENSOR
437
BR
OPR MON FUEL LEVEL TO FUEL FILTER JUMPER
863
BU
PAYLOAD MON TRANSMIT LCD OUT
438
YL
OPR MON COOLANT TEMP JUMPER
864
BR
PAYLOAD MON CLOCK LCD OUT
441
OR
ENG COOLANT TEMP GAGE
865
GY
PAYLOAD MON LATCH LCD OUT
446
PU
BRAKE OIL TEMP GAGE
866
PK
PAYLOAD MON TEST/SET
449
BU
SPDOM SENDER (SIGNAL NO 1)
867
PU
PAYLOAD MON MODE
450
YL
TACH SENDER (+)
891
BU
NEUT START CONT TO PAYLOAD MON SYSTEM
451
BR
TACH SENDER (-)
918
OR
ENG OVERSPEED LIGHT AND HORN
454
GN
RETARDER INDICATOR LAMP
919
GN
ENG OVERSPEED TEST SW
470
PU
CANE SW NEUT
A717
OR
START AID SENSOR SUPPLY
472
OR
PARKING BRAKE SW TO OVERSTROKE SW
A718
PU
START AID COOLANT SENSOR SIGNAL
473
GY
OVERSTROKE SW TO OVERSTROKE SW
A720
PK
START AID ENGINE SPEED SIGNAL
474
WH
OVERSTROKE SW TO OVERSTROKE SW
B748
BR
STEERING SPEED CONTROL SPEED IN
481
GN
CONVERTER TEMP SW TO BRAKE OIL TEMP SW
B922
WH
START AID LAMP RESET SW #1
A489
BU
OPR MON STEERING SPEED CONTROL SW
B923
YL
START AID LAMP RESET SW #2
A491
WH
XMSN SUPPLY SW TO CONVERTER FLTR INLET
B924
BU
START AID LAMP RESET SW #3
SW
B925
BR
START AID LAMP RESET SW #4
A492
OR
HOIST FLTR SW TO HOIST FLTR SW
B941
GY
START AID CONT SOL 1 & 2 RET
A493
YL
HOIST FLTR SW TO TORQUE CONVRTR SW
B942
OR
START AID CONT SOL 3 & 4 RET
B427
BU
TORQUE CNVRTR INLET FLTR SW TO HOIST
B943
PK
START AID CONT LAMP 1 OUTPUT
SCRN SW
B944
PU
START AID CONT ALARM OUTPUT
B945
WH
START AID CONT SENSOR 1
513
OR
A/C COMPRESSOR/REFRIGERANT PRESS SW
B946
YL
START AID CONT SENSOR 2
515
GY
BLOWER MOTOR (HI)
B947
BU
START AID CONT SENSOR 3
516
GN
BLOWER MOTOR (MEDIUM)
B954
YL
START AID CONT TEST SW INPUT
517
BU
BLOWER MOTOR (LO)
B998
BU
START AID CONT LAMP 2 OUTPUT
521
YL
A/C SW TO REFRIGERANT SW
522
WH
A/C CLUTCH TO THERMOSTAT SW
533
OR
FIRE SUPPR HEAT SENSOR/TEST SW
534
WH
FIRE SUPPR HEAT SENSOR/TEST SW
537
GN
TURN SIGNAL SW TO FLASHER
539
BU
TURN SIGNAL INDICATOR BASIC/RIGHT
540
WH
TURN SIGNAL INDICATOR LEFT
Accessory Circuits
Ground Circuits
Control Circuits
Basic Machine Circuits
Monitoring Circuits
A
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
8
14
15
16
B
C
D
E
1
F
17
18
19
20
21
22
23
24
25
26
27
28
29
A
8
12
14
16
3
6
8
9
10
11
14
15
16
B
C
D
E
1
2
18
19
20
25
27
28
29
30
31
32
37
35
33
36
38
F
39
40
41
42
44
45
48
19
20
21
23
24
25
26
28
G
H
39
39
39
G
H
4
5
12
13
17
21
22
23
24
26
34
7
39
43
46
47
3
4
5
6
9
10
11
12
5
13
29
2
17
18
19
20
21
22
23
24
25
26
27
28
39
30
31
32
37
35
33
34
36
38
7
39
40
41
42
43
44
45
46
47
48
REAR COMPARTMENT
(AREA E) - REAR VIEW
REAR COMPARTMENT SIDEWALL
(AREA H) - RIGHT SIDE VIEW
VEHICLE HARNESS CONNECTOR AND COMPONENT LOCATION
C14162P8
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
plug and 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.
E
E
E
E
E
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16
2
1
H
H
H
H
H
H
E
E
E
E
E
E
17
18
19
20
21
22
23
24
25
26
27
26
28
29
21
L13
L1
L44
L50
L15
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
7X1670
HH
1
L52
L43
311-WH
(NOTE D)M
311-WH
EE
417-GY
201-BK
EE
A
B
C
C
C
C
C
C
L20
446-PU
(NOTE D)M
315-GN-10
M
M
A
113-OR
L55
A
113-OR
1
B
2
200-BK-14
200-BK-14
Y
B
513-OR-14
522-WH-14
2
BU
BK
BU
BK
BU
BK
BU
BK
M
M
B-2018C9677Y
A-8008X4281EE
A-1200
Q
Q
M
NOTE D: TERMINAL TIED BACK IN HARNESS
L17
GG H
H
H
GG
HA
AA
GG
A
A
A
121-YL
121-YL
H
H
H
A
A
A
A
H
A
A
A
ZZ
ZZ A
AF
C
C
C
C
F
AA
A
A
A
A
A
A
A
A
AA
A
A
A
A
B
B
L42
A
A
J
J
J
J
J
J
J
J
J
J
J
Q
Q
Q
B
B
B
B
L58
L57
L57L57
L57
L58
L58
L57
L57L57
L57
L58
L58L58
L58
L58
L57
A493-YL A492-OR
B427-BU
A491-WH
TO
CAB
TORQUE CONVERTER
OUTLET SCREEN SW
3T9343
SYSTEM TEST/
DISABLE/
MANUAL SW
8C9812
RD
BK
3
1
2
1
2
L L
L
L31
L44
HH
HH
HH
HH
HH
HH
HH
A
A
A
D
F
B748-BR
2
4
3
5
1
A489-BU
138-GN
201-BK
417-GY
308-YL
307-OR
123-WH
446-PU
-T
201-BK
BRAKE
OIL SW
7N7854
T-
CONVERTER/
RETARDER SW
7N7854
ETHER OUT ALARM
9G9813
237-BK
B998-BU
B944-PU
B943-PK
B946-OR
B954-YL
BASE
2G0151
ETHER OUT LAMP 2
8X3708
1
2
PK
GN
L1
M
L13
M
L43
2
1
200-BK
2
317-YL
200-BK
1317-YL
200-BK-14
334-BU
B941-GY
310-PU
B942-OR
335-BR
336-GY
ETHER
SOLENOID 2
9X7137
ETHER
SOLENOID 1
9X7137
ETHER
SOLENOID 4
9X7137
A718-PU
A717-OR
A720-PK
308-YL
237-BK
237-BK
237-BK
237-BK
237-BK
308-YL
105-BR
105-BR
B947-BU
B924-BU
B925-BR
B923-YL
B945-WH
B922-WH
B925-BR
105-BR
308-YL
237-BK
B947-BU
1
3
2
5
4
ETHER BOTTLE
RESET SW 3
3T3133
105-BR
B924-BU B924-BU
2
1
3
ETHER BOTTLE
RESET SW 4
3T3133
B925-BR
105-BR
105-BR
105-BR
105-BR
B923-YL
ETHER BOTTLE
RESET SW 2
3T3133
1
3
2
B922-WH
B922-WH
105-BR
ETHER BOTTLE
RESET SW 1
3T3133
4
5
2
3
1
B945-WH
237-BK
413-BR
308-YL
105-BR
B922-WH
B945-WH
B924-BU
B947-BU
B925-BR
B923-YL
A717-OR
A720-PK
A718-PU
B941-GY
B942-OR
336-GY
335-BR
334-BU
310-PU
308-YL
237-BK
237-BK
237-BK
BK
BK
PK
GN
237-BK
248-BK
247-BK
246-BK
1
2
3 3
2
1
5
4
245-BK
245-BK
246-BK
247-BK
248-BK
A717-OR
A720-PK
A718-PU
B941-GY
B942-OR
336-GY
335-BR
334-BU
12
20
16
1
3
2
6
18
21
9
7
5
4
10
17
13
15
11
8
24
14
23
19
310-PU
B922-WH
B945-WH
B924-BU
B947-BU
B925-BR
22
B923-YL
I
W
e
d
c
b
a
J
U
E
H
G
F
L
K
C
A
O
P
D
M
S
V
R
B
T
X
N
Y
Z
B944-PUOUT HORN
B954-YL
2
1
YYYY
1
2
+ BATTERY
START
246-BK
GROUND
SOL RET 3&4
SOL RET 1&2
ETHER CONTROL
9X5303
SPARE
310-PU
334-BU
335-BR
336-GY
A718-PU
248-BK
B925-BR
B924-BU
B923-YL
B922-WH
TEST SW
308-YL-14
B947-BU
B946-OR
B945-WH
B943-PK
ENG SPD
SOL 2
RESET SW 2
SOL 1
CODE 2
RESET SW 1
OUT LAMP 1
SENSOR 1
MANUAL
SENSOR 2
RESET SW 3
CODE 0
CODE 1
COOL TEMP
SOL 4
SOL 3
SENSOR +V
B998-BU
OUT LAMP 2
RESET SW 4
245-BK
247-BK
CODE 3
B941-GY
B942-OR
202-BK
2
B
1
VV
FOG
LAMP
8T8752
101-RD-10
BK
BK
308-YL-14
L44
L45
237-BK
308-YL
237-BK
OR-14
607-PK-14
7
A720-PK
A717-OR
237-BK
GROUND
SIGNAL
V+
ENGINE SPEED
SENSOR
6T4361
B
V+
SIGNAL
GROUND
A
L43
C
L46
L48
L15
L13
203-BK
6
5
4
1
9
3
707-PU
2
7
891-BU
8 105-BR
308-YL
237-BK
B943-PK
B944-PU
B946-OR
B954-YL
B998-BU
2
200-BK-14
307-OR
891-BU
891-BU
QQ
308-YL
A
YY
BASE
3T0304
LAMP
7N1996
ENGINE OVERSPEED
WARNING LIGHT
200-BK
919-GN
918-OR
LAMP
5D0019
200-BK
ENGINE OVERSPEED
ALARM 9G9813
UU
2
1
RD
BK
918-OR
200-BK
L54
L53
L53
L52
YY
L52
799-WH
101-RD-10
619-GN-14
251-BK
L51
L50
405-GY
123-WH
202-BK
201-BK
891-BU
ENGINE OVERSPEED
TEST SWITCH
9D3721
123-WH
200-BK
200-BK
405-GY
450-YL
767-WH
F-11008W9561
772-BR
UU
A
200-BK
123-WH
XX
405-GY
451-BR
123-WH
450-YL
200-BK 2
450-YL
200-BK
3
4
1
5
405-GY
200-BK
919-GN
200-BK
405-GY
SIG
+
ENGINE OVERSPEED
MONITOR 7T3821
GY
PU
BU
BR
YL
8
918-OR
-
7
6
200-BK
1
4
450-YL
TEST SW
ENG OIL PR
WARNING
ENG SPEED
UU
UU
3
ID CODE
1
5GN
PK
YL
4
8
6
7
GROUND
+ BATTERY
OR
2
5
2
OR
237-BK
RD
BK
GN
WH
BU
202-BK
202-BK
737-GN
736-YL
735-OR
734-WH
733-BR
202-BK
126-PK
FRONT GR 4
TRANSMISSION
GEAR INDICATOR
8C9609
FRONT GR 5
GN-18
RD-18
BU-18
PU-18
GY-18
BR-18
7
6
307-OR
BU
PU
891-BU
450-YL
451-BR
L51
L53
891-BU
3
FRONT GR 3
OR-18
+ BATTERY
FRONT GR 2
GROUND
4
3
707-PU
ID CODE 1
202-BK
3
2
4
1
FRONT GR 1
YL-18
BK-18
WH-18
2
L55
1
123-WH
451-BR
799-WH
450-YL
L53
L50
112-PU-12
L51
L36
601-GY
449-BU
L12
451-BR
450-YL
601-GY
H
200-BK-14
CUSTOMER
DATA
CONNECTOR
818-BR
819-GY
250-BK
820-BU
QQ
E
D
C
200-BK
A720-PK
A717-OR
RR
RR
405-GY
418-WH
ENGINE
OIL SW
6T7663
ENGINE
OIL SW
6T7663
201-BK
PP
209-BK
SSRR
QQ
RD
BR
1
2
RD
BR
1
2
PARK/
TURN
LAMP
3T3967
PARK/
TURN
LAMP
3T3967
NOTE
00
00
00
00
01
00
04
B-1,E-1VV 5C5382
C-10
A-3
B-11
8X6292
8X3704
8X5017
WW
YY
ZZ
00
02
02
04
00
01
01
03
01
04
00
00
L P
P
P
614-PU
540-WH
00
2
1
03
KK
03
W/O TRACTION AID
CONNECT WIRE AS. KK
TO HARNESS AS. A
AT C-9
BK
QQ
05
03
2
251-BK
307-OR
01
6
113-OR
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
7V5647
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V5647
473-GY
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V5647
W/O PAYLOAD MONITOR CONNECT
WIRE AS. PP TO HARNESS AS. A
BK
QQ
200-BK
L50
L30
408-WH
419-YL472-OR
408-WH
JJ
ENGINE
GROUND
FRAME
GROUND
BK-4
419-YL
472-OR
MM
FRAME
GROUND
CAB
GROUND
NEUTRAL/START
CONTROL
7X1362
OPR PANEL 409-OR
NEUTRAL
200-BK
126-PK
307-OR
409-OR
306-GN
470-PU
GN-18
PK-18
GY-18
BU-18
OR-18
YL-18
9
8
7
6
2
BR-18
WH-18
+ BATTERY
START SW
GROUND
START RELAY
3
2
4
1
OR-18
PU-18
BK-18
GN-18
3
1
5
PAYLOAD
MONITOR
GN LAMP
8T9684
PAYLOAD
MONITOR
RED LAMP
8T9683
799-WH
PAYLOAD
MONITOR
OPERATOR
PANEL
9X6847
202-BK
202-BK
OPERATOR STATION
B-97G1060MM
A-2,A-7318761JJ
C-6PP
C-105T3943KK
A-68W3048LL
02
02
L14
799-WH
201-BK
105-BR
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
9W3352
LEFT REAR
STRUT SENSOR
9W3352
860-PK
861-PU
251-BK
799-WH
YL
GY
GN
SIGNAL
+V
GROUND
3
2
1
YL
GY
GN
SIGNAL
+V
GROUND
3
2
1
799-WH
799-WH
251-BK
251-BK
861-PU
860-PK
01
PAYLOAD
MONITOR
CONTROL
9X6846
799-WH
A
635-BU
636-GN
794-YL
859-YL
858-GY
861-PU
860-PK
02
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
9W3352
RIGHT FRONT
STRUT SNSR
9W3352
PAYLOAD
MONITOR
GREEN
LAMP
8T9684
PAYLOAD
MONITOR
RED
LAMP
8T9683
1
2
WH
WH
WH
WH
813-PK
138-GN
794-YL
202-BK
A
4
1
3
RD
RD
BK
BK
1
1
2
2
105-BR
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
814-YL
808-PU
L45
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
GN
GY
YL
1
2
3
GROUND
+V
SIGNAL
GN
GY
YL
1
2
X
WH
WH
B
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
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
DD
NOTE C: NOT USED WITH AUTOMATIC FIRE SUPPRESSION
8W7984
5T8598
E-115T8580GG
A-128X2286HH
E-125T9326
8W0639
5T8619
CABLE AS.
5T4666
343735
8W4826
C-58W0636
A-1,F-28W0635Z
B-88W0708X
C-88W0638W
C-2
C-2
E-1
F-1
E-1
7T3418
5T9411
6G9462
6T4300
6T4301
8W0640
5T9413
5T9414
8W8181
8W0637
5T8599
8W9931
5T9412
8X6369
8X6189
8X5294
THIS SCHEMATIC IS FOR THE 789 TRUCK (6T8592 CHG 04)
NOTE B: NORMALLY CLOSED WHEN DOOR OPEN
F-3
A-3
A-1
A-2
FF
CC
BB
AA
WIRE AS.
A-10
A-11
B-1
F-2
E-3
C-6
D-10
B-10
B-10
B-9
B-9
B-8
V
U
T
S
R
Q
P
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
M
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF,
AND XMSN SHIFTER IN NEUTRAL
C
B
A
23
1
3 2
F
E
D
1
456
6 5 4
789
9 8 7
1 111
2 0
C
B
A
D
E
F
2 0
1111
DD
GG
604-OR
103-YL
STOP
LAMP SW
2M9346
202-BK
BRAKE
SYSTEM
AIR SW
9G8009
408-WH
201-BK
472-OR
201-BK
720-PU
202-BK
PARKING
BRAKE SW
3T3195
SECONDARY
BRAKE SW
3T3195
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
3L6306
SERVICE/
RETARDER SW
3L6306
799-WH
250-BK
818-BR
820-BU
819-GY
04
107-WH
107-WH
635-BU
720-PU
706-BR
202-BK
209-BK-14
308-YL
307-OR
L12
450-YL
308-YL
BACKUP
RELAY
3T0376
NEUTRAL
121-YL
612-GY
321-BR
308-YL
20A
10A
10A
10A
15A
15A
DOME, STOP &
TURN LAMP
BREAKER
9G9487
KEY
BREAKER
9G9487
ENGINE
SHUTDOWN
BREAKER
9G9487
112-PU-10
112-PU-10
101-RD-10
101-RD-10
FRONT FLOOD
LAMP BREAKER
3T2662
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-12
112-PU-12
101-RD-10
120-YL
129-PU
121-YL
CONVERTER
CIGAR LIGHTER
BACKUP ALARM
112-PU-12
10A
10A
10A
112-PU-12
112-PU-12
112-PU-12
10A
10A
10A
112-PU-12
112-PU-12
112-PU-12
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
80A
ALT BREAKER
9S4693
L29
L29
L36
L38
L37
L34
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
8
6
3
7
5
2
4
1
610-OR-14
2
1
BK
BK
200-BK
DIAGNOSTIC CONNECTOR
BRAKE RETRACT
BREAKER
3T8728
MAIN
RELAY
3T0376
LUBE
SOLENOID
5T4434
LADDER LAMP
BREAKER
6N8589
801-PK
200-BK
WW
B923-YL
109-OR-4
109-OR-4
308-YL
112-PU
308-YL
200-BK
139-OR-10
123-WH
121-YL
126-PK
15A
HEAD LAMP
(HIGH) BREAKER
3T2662
203-BK
15A
FUSES
3K8782
FUSE HOLDERS
4K5122
207-BK
307-OR
AIR CONDITIONER
BREAKER
6N8589
112-PU
102-BU-14
115-PK-14
105-BR
109-OR
308-YL
101-RD
101-RD
101-RD-10
101-RD-10
101-RD-10
10A
10A
10A
112-PU-12
112-PU-12
112-PU-12
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
9G6981
RD-18
BK-18 2
1
WH/RD-18
WH/BK-18
3
2
1
+ BATTERY
GROUND
+12 VOLT
GROUND
BR
GY
L34
L34
202-BK
201-BK-14
200-BK-14
200-BK-8
202-BK
200-BK
200-BK-14
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
03
237-BK
3
5
1
8
7
4
QQ
QQQQ
251-BK
HH C
605-YL
606-GY
614-PU
608-GN
XX
BRAKE
RETRACT
8C9514
L52
L53
L54
WH
BK
WH
BK
WH
BK
GROUND
SIGNAL
+V
C
B
A
(L)
S-2
(R)
S-1
TRANSMISSION SW
9W1409
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
L8
UP SHIFT
SOLENOID
6T9290
LOCKUP
SOLENOID
6T9290
DOWN SHIFT
SOLENOID
6T9290
PROPORTIONAL
SOLENOID
3T0062
L26
L8
L24
L38
L37
L36
L7
L9
L10
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
767-WH
1
2
ETHER OUT LAMP 1
8X3708
G
F
767-WH
Z
202-BK
5
6
1
2
3
4
BB
QQ
769-BU
202-BK
767-WH
770-GN
BASE
2G0151
L40
L41
L40
408-WH
472-OR
231-BK
608-GN
612-GY
122-BU
122-BU
200-BK
200-BK-10
AIR
START
SOLENOID
5T4434
GN
BK
E
C
306-GN
1
2
3
1
2
WH
BK
MOTOR
202-BK
202-BK
202-BK
2
2
2
1
1
1
GROUND
SIGNAL
+V
C
B
A
GROUND
SIGNAL
+V
C
B
A
BK
BK
BK
U
E
E
4
1
2
3
WHEEL SPEED
SENDER
3T2470
WHEEL
SPEED
SENDER
3T2470
U
U
V V G
G
GGG
BACK-UP
ALARM
3T1815
BACK-UP
LAMP
8C5582
BACK-UP
LAMP
8C5582
XMSN
SPEED
SENDER
9X7000
4 WAY
SOLENOID
9G9988
BK
767-WH
202-BK
769-BU
202-BK
767-WH
770-GN
STOP/
TAIL
LAMP
7X6219
STOP/
TAIL
LAMP
7X6219
TURN
LAMP
3T3968
TURN
LAMP
3T3968
200-BK
640-GN
606-GY
J
H
A
B
C
D
E
I
F
G
639-WH
L41
605-YL
231-BK
709-OR
710-GN
705-PK
704-GY
703-BU
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
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
2G2159
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
202-BK
12
9
8
7
17
13
14
15
6
5
4
3
2
1
10
19
20
16
18
11
W
W
TRACTION
AID
CONTROL
3T0529
109-OR-4
101-RD-4
203-BK
138-GN
2
1
807-BR
06
NITROGEN
ACTUATOR
SOLENOID
8T8590
200-BK
NITROGEN
ACTUATOR SW
6T6085
209-BK
812-GN
808-PU
807-BR 2
1BK-18
BK-18
107-WH-14
209-BK-14
632-WH-14
631-GY-14
808-PU
BK
BK
200-BK-8
321-BR
Z
200-BK-14
201-BK
126-PK
Z
JJ
308-YL
612-GY
202-BK
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-4
F
L35
L27
L25
L25
L25
L38
L30
L30
L30
L28
L16
L20 L20
L20
L21
L42
L42L42
L27
L26
L24
L37
L33
L32
L31L31
TACHOGRAPH
7D1513
123-WH
601-GY
3
2
1
8W3841QQ
801-PK
202-BK
200-BK
200-BK
200-BK
201-BK-14
201-BK
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
407-PK
327-PK-14
115-PK-14
149-PU-14
102-BU-14
441-OR
449-BU
400-GN
446-PU-14
410-WH
437-BR
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
02
04
04
474-WH
2
1
BODY
RAISE SW
8C5681
BK
PU
103-YL
105-BR
02
00
5
ID CODE 3
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
407-PK
321-BR
614-PU
426-BR
A489-BU
124-GN-14
522-WH-14
513-OR-14
226-BK
418-WH
406-PU
412-BU
413-BR
405-GY
403-GN
437-BR
410-WH
409-OR
767-WH
132-PK132-PK
768-OR 768-OR
202-BK202-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
604-OR
103-YL
604-OR
803-BU
X
W
20
19
14
4
18
2
17
10
6
8
15
12
11
1
13
9
3
16
5
7
6
5
4
10
12
1
11
2
3
8
7
9
L29
B
450-YL
451-BR
L54
3
1
2
02
D-58W7193UU
(NOTE D)
808-PU
533-OR
534-WH
533-OR
534-WH
L30
315-GN-10
L44
TO
BLOCK
L38
ID CODE 2
L37
L7
L10
L9
L8
L10
L7
L4
L5
L31
L35
L28
YY
L20
L26
L24
L32
L33
L36
L8
L9
L4
L5
773-GY
E
D
B
C
C
A
A
C
C
18
23
5
19
21
8
10
25
15
14
17
4
3
2
12
207-BK
TRANSMISSION
SUPPLY SW
3T9343
TRANSMISSION
FILTER SW
9G3341
426-BR
426-BR
201-BK
C
-T
STEERING SW
9X8199
STEERING
BLEED
SOLENOID
6T8046
NN
237-BK
308-YL
105-BR
202-BK
450-YL
451-BR
122-BU
XX
306-GN
608-GN
201-BK
200-BK
606-GY
605-YL
426-BR201-BK
417-GY 417-GY
612-GY
614-PU
2
1
200-BK
327-PK
327-PK
2
1
450-YL
451-BR
T-
RIGHT
HOIST SCREEN SW
9X7781
LEFT
HOIST SCREEN SW
9X7781
481-GN
202-BK
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
11
1
2
3
4
9
14
5
7
6
10
13
12
8
OPERATOR STATION
13
11
9
16
22
6
20
7
24
1
201-BK
407-PK
226-BK
418-WH
405-GY
403-GN
406-PU
412-BU
413-BR
441-OR
203-BK
310-PU
437-BR
400-GN
200-BK-8
101-RD-4
109-OR-4
777-PU-10
327-PK-14
446-PU-14
522-WH-14
513-OR-14
4
BC
777-PU-10
DD
202-BK
TACHOMETER
8C5471
LAMP
5D0019
LAMP
5D0019
ENGINE
SHUTDOWN
CONTROL
(NOTE C)
9G9287
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
5D0019
A W
203-BK
202-BK
6
5
4
3
2
1
113-OR
01
L20
L18
6
5
451-BR
450-YL
L18
K
A
201-BK
446-PU-14
2
4
3
1
OPERATOR
MONITOR
TEST SW
9D3721
COOLANT
TEMP GAGE
4W0483
BRAKE OIL
TEMP GAGE
4W2067
123-WH
449-BU
446-PU
00
01
IGN
SEND
GRD
IGN
SEND
GRD
200-BK
B-7
PARK BRAKE
XMSN FILTER
BK AIR PR
TC/RET TEMP
FUEL FILTER
ID CODE
PRIM STER
COOL FLOW
COOL TEMP
NEUTRAL
+ BATTERY
GROUND
ALTERNATOR
ENG OIL PR
ALARM
LAMP
FUEL PR
TEST
ENG OIL PR
11
20
19
18
17
16
15
14
13
12
10
9
8
7
6
5
4
3
2
1
OPERATOR
MONITOR
3T9200
A
113-OR
403-GN
426-BR
405-GY
406-PU
407-PK
408-WH
410-WH
412-BU
413-BR
437-BR
226-BK
A489-BU
418-WH
419-YL
409-OR
201-BK
411-PK
415-GN
L22
123-WH
799-WH
3
327-PK-14
209-BK-14
PK-18
BK-18
GN-18
LUBE SOL
GROUND
+ BATTERY
3
2
1
AUTOLUBE
CONTROL
7T3823
107-WH-14
107-WH-14
306-GN
326-PU
202-BK-18
726-BU
327-PK-14
BACKUP
LAMP SW
6T3991
L42
451-BR
450-YL
L25
L18
L18
L27
L26
L24
L22 L22
L16
L19
L17
L16
L39
L41
202-BK
L40
F
F
FA
A
A
A
201-BK
201-BK
415-GN
411-PK
202-BK
XMSN
SPEED
DISTRIBUTOR
3T5438
B
BRAKE
RETRACT SW
9D3721
2 1
1 2
3
32
1
L41
BODY RAISE
ID CODE 3
ID CODE 0
ID
CODE
1
ID CODE 2
LEVER 5
LEVER 4
LEVER 3
LEVER 2
LEVER 1
+10V
XMSN SPEED
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
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
11
20
19
18
17
16
15
14
13
12
10
9
8
7
6
5
4
3
2
1
N/C
N/O
F
L40
DOME
LAMP
7X6398
SERVICE
METER
3T8325
TRACTION
AID TEST SW
4D1836
CIGAR
LIGHTER
9W0335
KEY SW
9G7641
AIR
PRESSURE
GAGE
1W3306
YY
ZZ
L41
L40
L40
L47
L46
L43
L28
L49
L48
L56
L32
L48
F
446-PU-14
470-PU
200-BK
202-BK
202-BK
706-BR
720-PU
202-BK
470-PU
200-BK
307-OR
126-PK
306-GN
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
202-BK
BACKUP
ALARM SW
6G4195
SHIFT LEVER SW
9W0681
TRANSMISSION CONTROL
9W0009
121-YL
321-BR
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
L39
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
- +
ST
ON
OFF
B
S
C
R
799-WH
L55
138-GN
801-PK
200-BK
FLASHER
8D6946
537-GN103-YL
326-PU
306-GN
200-BK
768-OR
710-GN
123-WH
449-BU
B748-BR
202-BK
DOME
LAMP SW
9D4068
OR-18
WH-18
YL-18
BU-18
BK-18
RD-18
+ BATTERY
GROUND
ENG 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
BBW
810-BU
810-BU
859-YL
6
5
FUEL
FILTER SW
7N4447
866-PK
867-PU
209-BK
808-PU
ETHER AID BREAKER
6N9349
107-WH-14
LL
200-BK-14
812-GN
807-BR
803-BU
803-BU
812-GN
807-BR
809-GN
811-GY
113-OR
306-GN
326-PU
327-PK
209-BK
107-WH
327-PK
209-BK
107-WH
306-GN
326-PU
534-WH
533-OR
2
6
3
4
5
1
534-WH
803-BU
808-PU
533-OR
L39
L6
30A
L43
113-OR
809-GN
811-GY
803-BU
209-BK
794-YL
636-GN
635-BU
251-BK
799-WH
632-WH-14
631-GY-14
2
3
6
4
5
1
L13
L14
207-BK
L13
X
534-WH
533-OR
534-WH
533-OR
WH-18
WH-18
OR-18
OR-18
4
2
1
3
-T
132-PK
768-OR
202-BK
201-BK
207-BK
M
L56
L4
L4
L3
L2
L49
L38
L33
L11
L11
B
B
J
JA
A
B
FUEL
PRESS SW
9W3187
AFTERCOOLER SW
8N1425
L35
105-BR
209-BK-14
4
FIRE
DET SW
7T4785
437-BR
113-OR
L1
C
L14
L13
L6
L23
L47
L41
L46
L43
607-PK-14
610-OR-14
622-PU-14
149-PU-14
614-PU
410-WH
103-YL
201-BK
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
412-BU
3
438-YL
201-BK
201-BK
201-BK
201-BK
400-GN
405-GY
201-BK
-T
327-PK-14
226-BK
403-GN
406-PU
441-OR
109-OR-4
202-BK
200-BK
101-RD-4
522-WH-14
513-OR-14
2
3
1
L56
L48
L23
L13
L46
202-BK
L34
777-PU-10
L43
203-BK
310-PU
BK-4
200-BK-10
200-BK-8
OPERATOR STATION
MODE
TEST/SET
BRAKE OIL
SENDER
8N3844
L41
LA
LADDER
LAMP SW
4D1836
Z
JJ
CHG
102-BU-14
6
5
9
8
12
11
3
2
LAMP
5D0019
803-BU
816-BR
209-BK
200-BK-14
2
1
2
1
W
SSSS
TO
CAB
C-48W3844SS
C-48W3843RR
317-YL-14
Q
BB
Z
Z
L51
ETHER
SOLENOID 3
9X7137
Q M
LL
LA
LADDER
FLOOD
LAMP
3T4411
LCD LATCH
B942-OR
TO
FRAME
808-PU
803-BU
SHUTDN ID
+ BATTERY
GROUND
SHUT DN SOL
OFF (KEY)
START (KEY)
DSCH PR +
DSCH PRESS.
DETECT OUT
DETECT IN
ACT. SOL
FIRE TEST
SYS FAIL
ALERT
DSCH PR MON
SYS PRESS.
+ BAT OUT
DETECT OUT
DETECT IN
11
20
19
18
17
16
15
14
13
12
10
9
8
7
6
5
4
3
2
1
327-PK
209-BK
810-BU
803-BU
107-WH
PYLD MNTR
807-BR
328-OR
809-GN
811-GY
812-GN
533-OR
533-OR
534-WH
534-WH
328-OR
306-GN
326-PU
AUTOMATIC FIRE
SUPPRESSION CONTROL
6T5619
631-GY-14
632-WH-14
619-GN-14
611-PU-14
620-WH-14
620-WH-14
620-WH-14
539-BU
614-PU
9
8
7
6
5
4
3
3
2
2
1
1
3
4
5
6
3
5
4
2
1
2
1
7
6
816-BR
810-BU
803-BU
FIRE
SUPPRESSION
MONITOR
6T5618
809-GN
811-GY
209-BK
113-OR
+V (IN)
ALERT
ALARM
TEST
SYS FAIL
BU-18
BR-18
GY-18
PU-18
OR-18
GN-18
BK-18
+ BATTERY
GROUND
7
6
5
4
3
2
1
BK-18
AGENT SW
8C5436
OR-14
FOG
LAMP
8T8752
632-WH-14 632-WH-14
631-GY-14631-GY-14
631-GY-14
FOG LAMP SW
6T3989
614-PU
614-PU
115-PK-14 103-YL
632-WH-14
631-GY-14
103-YL
200-BK
LCD CLOCK
TX LCD OUT
+24V (OUT)
814-YL
NITROGEN
ACTUATOR SW
6T6085
BK-18
BK-18
808-BR
2
1
813-PK
BK-18
601-GY
454-GN
ENGINE FLOOD
LAMP SW
8D2676
149-PU-14
T
SPEEDOMETER
3T3408
BASE
2G0151
PANEL
LAMP
7N5876
PANEL
LAMP
7N5876
513-OR-14
L20
607-PK-14
149-PU-14
149-PU-14
336-GY
V+
SIGNAL
GROUND
YL-18
OR-18
BK-18
C
622-PU-14
623-BU-14
521-YL-14
LOW BEAM
HEAD LAMP
8T8752
HIGH BEAM
HEAD LAMP
8T8753
619-GN-14
614-PU
623-BU-14
622-PU-14
607-PK-14
539-BU
611-PU-14
540-WH
614-PU
2
1 BK-14
607-PK-14
619-GN-14
611-PU-14
1
2
310-PU
B941-GY
1
YY
620-WH-14
620-WH-14
619-GN-14
611-PU-14
L21
L21
L19
L19
RETARDER
LAMP
7N9967
J
J
K
R
A
A
A
200-BK
L44
6 5
9
8
12
11
3
2
2
1
DIMMER
RESISTOR
3T3437
3
2 1
32
3
21
TURN
SIGNAL SW
9G5589
2
1
RETARDER SW
4D4785
BASE
3T0304
L52
200-BK-14
522-WH-14
521-YL-14
124-GN-14
2
4
3
1
454-GN
MASTER
FAULT
LAMP
7N1996
201-BK
415-GN
411-PK
RIGHT
TURN
LAMP
7N5876
601-GY
HIGH BEAM
INDICATOR
LAMP
7N9967
200-BK
200-BK
LEFT
TURN
LAMP
7N5876
540-WH
539-BU
IGN
SEND
GRD
410-WH
201-BK
123-WH
103-YL
540-WH
539-BU
601-GY
611-PU-14
201-BK
415-GN
411-PK
441-OR
9
8
3
7
1
6
5
2
4
210-BK
135-BU
LADDER
LAMP SW
6T3991
DOME
LAMP SW
6T3990
PANEL
DIMMER SW
6T3991
RUNNING
LAMP SW
6T3989
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
601-GY
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
2H1855
149-PU-14
623-BU-14
622-PU-14
607-PK-14
513-OR-14
619-GN-14
614-PU
610-OR-14
611-PU-14
611-PU-14
OPERATOR STATION
L44
L45
L45
515-GY-14
8W8354
B
FIRE
ALARM
9G9813
209-BK
816-BR
2
1 RD
BK
LADDER
FLOOD
LAMP
3T4411
M
N
J
FAULT
ALARM
9G9813
2
1
BK
RD
201-BK
410-WH
2
1 450-YL
451-BR
ENGINE
SPEED
PICKUP
9X5393
5
6
6
6
5
5
5
6
L15
L13
BK-4
2
1 539-BU
614-PU
L54
200-BK-14
521-YL-14
124-GN-14
522-WH-14
RS
3
4
1
2
5
RESISTOR
9G1950
200-BK-14
522-WH-14
OR
GRN
BLU
BLK
RED
-T
R
R
2
2
1
1
5
4
3
2
1
BLOWER SW
6P3236
THERMO SW
9X5446
517-BU-14
516-GN-14
515-GY-14
521-YL-14
124-GN-14
BLOWER
9G8693
BLOWER
9G8697
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
(NOTE D)
419-YL
2
1
BK-18
BK-18
AGENT SW
8C5436
FIRE
DET SW
7T4785
FIRE
DETECTION SW
7T4785
FIRE
DETECTION SW
7T4785
FIRE
DETECTION SW
7T4785
FOG
LAMP
8T8752
631-GY-14
A
2
1
L57
481-GN
446-PU
Q
Q
TORQUE CONVERTER
INLET FILTER SW
7N4447
123-WH
400-GN
327-PK-14
327-PK
470-PU-18
A
A
BK-4
326-PU
306-GN
107-WH
209-BK
327-PK
COOLANT
SENSOR
9X0377
113-OR
X
534-WH
533-OR
533-OR
X
534-WH
533-OR
534-WH
533-OR
WH-18
WH-18
OR-18
OR-18
4
2
1
3
-T
X
534-WH
533-OR
534-WH
533-OR
WH-18
WH-18
OR-18
OR-18
4
2
1
3
-T
WH-18
WH-18
OR-18
OR-18
4
2
1
3
-T
X
534-
W
H
533-OR
534-WH
533-OR
WH-18
WH-18
OR-18
OR-18
4
2
1
3
-T
COOLANT SW
9X3040
201-BK
620-WH-14
237-BK
YY
M
620-WH-14
LOW BEAM
HEAD LAMP
8T8752
HIGH BEAM
HEAD LAMP
8T8753
PARK/TURN
LAMP
3T3967
PARK/TURN
LAMP
3T3967
2 2
1 1
BRBR
RD RD
NN
539-BU
614-PU
619-GN-14
611-PU-14
L11
L12
308-YL
L3
L2
A718-PU
B
J
2
1
L44
B
B
FF
DISCONNECT SW
7N0718
B
A
CCAA
L5
L41
L47
L41
L46
L43
L1
L23
L48
AAA
534-WH
L15
B942-OR
M
335-BR
BK-4
2
1
438-YL
AAA
BBB
406-PU
441-OR
AIR
CONDITIONER
COMPRESSOR
7N4297
ENGINE
SHUTDOWN
SOLENOID
7W5967
ALTERNATOR
8N0999
COOLANT SW
7N9785
COOLANT SENDER
6N5926
A-5
A-4
BK-18
BK-18
2
1
441-OR
406-PU
8X5014
412-BU
109-OR-4
327-PK-14
226-BK
403-GN
403-GN
412-BU
1
2
RD-14
BK-14 209-BK
522-WH-14
513-OR-14
- T
8X5013
8X5293
YY
BBB
BBB
YY
YY
AAA
00
00
YY
L6
-T
ALT
+
R
BK-14
REFRIGERANT SW
(NOTE A)
9W0549
513-OR-14
521-YL-14
OPERATOR STATION
ENGINE
FLOOD
LAMP
6N7989
ENGINE
FLOOD
LAMP
6N7989
12V BATTERY
3T5760
12V BATTERY
3T5760
B941-GY
334-BU
2
1
BK-4
101-RD-4
BK-4
BK-4
NN
FOG
LAMP
8T8752
NEG POSNEG POS
D32349
