SENR6396
December 1993
772B Tractor & 773B Truck
Electrical System
772B:
64W190-299
773B:
63W3733-4199
COMPONENT IDENTIFIER (CID) LIST
Electronic Programmable Transmissionn Control II
(EPTC II) (MID No. 027)
CID No. Component
168 Electrical System Voltage
190 Engine RPM Sensor
248 CAT Data Link
269 Sensor Supply
627 Parking Brake Switch
650 Harness Code
672 Torque Converter Output Speed Sensor
700 Transmission 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
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Action (EMS) C-2 1 Solenoid - Down Shift A-13 25
Alarm - Backup B-15 2 Solenoid - Engine Shutdown A-3 26
Alternator A-3 3 Solenoid - Lockup A-13 27
Batteries A-7 4 Solenoid - Proportional A-14 23
Breakers
C-5, C-6,
D-5, D-6
A Solenoid - Start Aid A-4 28
Control - Engine Shutdown C-3 5 Solenoid - Up Shift A-14 25
Control - Neutral/Start F-15 6C Speedometer F-2 A
Control - Supplemental Steering E-1 7 Switch - Backup Alarm D-11 29
Control - Traction Aid D-15 B Switch - Blower E-11 16
Control - Transmission E-13 B Switch - Body Raise (Trans) D-13 B
Distributor - Transmission Speed E-15 8C Switch - Brake Master Cylinder Overstroke A-10 30
Dryer - Air A-8 9 Switch - Brake Oil Temp (EMS) A-9 18
Flasher E-5 A Switch - Brake Retarder Press F-15 31
Fuse - Supplemental Steering Lamp A-8 10 Switch - Brake Retract D-3 A
Fuses D-6 A Switch - Brake System Air Press (EMS) C-15 32C
Gauge - Air Press D-3 A Switch - Converter/Retarder Temp (EMS) A-9 33
Gauge - Brake Oil Temp F-2 A Switch - Disconnect A-6 4
Gauge - Coolant Temp F-3 A Switch - Engine Coolant Flow (EMS) A-3 34
Ground - Cab/Frame C-11 10 Switch - Engine Coolant Temp (EMS) B-3 3
Ground - Frame B-9 10 Switch - Engine Coolant Temp (Start Aid) A-4 19
Ground - Cab E-12 11C Switch - Engine Oil Press (EMS) A-3 3
Lamp - Action (EMS) F-2 A Switch - Fuel Press (EMS) B-3 35
Lamp - Brake Retarder F-2 A Switch - Key Start F-3 A
Lamp - Engine Overspeed Warning
(Not Used)
F-2 A Switch - Operator Monitor Test D-3 A
Lamp - Supplemental Steering E-2 A Switch - Parking Brake Press (EMS) C-15 36C
Meter - Service E-13 B Switch - Refrigerant Press (AC) B-7 37
Module - Stop/Tail Lamp B-14 12 Switch - Running Lamp E-3 A
Monitor - Operator (EMS) D-1 A Switch - Secondary Brake Press (Trans) E-15 36C
Motor - Brake Retract A-11 13 Switch - Service Brake Press (Traction) E-15 38C
Motor - Starting A-6 14 Switch - Service Brake Press (Trans) E-15 39C
Motor - Supplemental Steering A-7 15 Switch - Service Clear (Trans) E-13 B
Motors - Blower E-10 16 Switch - Service Set (Trans) F-13 B
Pickup - Engine Speed (Tach) A-4 17 Switch - Shift Lever D-11 29
Relay - Brake Retract C-6 A Switch - Start Aid D-3 A
Relay - Main Power D-6 A Switch - Stop Lamp Press (Module) F-15 39C
Relay - Starter A-6 10 Switch - Supplemental Steering E-3 A
Relay - Supplemental Steering Motor A-7 10 Switch - Steering Flow A-8 40
Resistor - Blower Speed E-10 16 Switch - Thermostat E-11 16
Resistor - Starter/Diagnostic Conn A-6 14 Switch - Traction Aid Test D-3 A
Sender - Brake Oil Temp (Gauge) A-9 18 Switch - Transmission A-13 25
Sender - Coolant Temp (Gauge) A-3 19 Switch - Transmission Filter Press (EMS) A-9 41
Sensor - Transmission Speed A-13 20 Switch - Transmission Oil Temp (EMS) A-9 41
Sensor - Wheel Speed (LH) B-15 21 Switch - Turn Signal D-5 A
Sensor - Wheel Speed (RH) A-15 22 Tachograph F-12 B
Solenoid - 4 Way A-14 23 Tachometer
Solenoid - Air Conditioner Clutch A-3 24
A = Components located in dash area
B = Components located behind operator's seat.
C = Components located in rear compartment.
Component Location
Machine locations are repeated for components located close together.
FAILURE MODE IDENTIFIER (FMI) LIST
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.
Related Service Manuals
Form No.
SENR2082
SENR4130
SENR2986
SENR2945
SENR3889
Electronic Programmable Transmission Control II SENR5618
Starting And Charging Systems SENR2947
SENR3860
Automatic Electronic Traction Aid
Electronic Monitoring System
Electronic Neutral Start Control
Starting Motor (3T-8967)
Title
Alternator (100-5047):
Consist No. 100-5046
Consist No. 100-5045
Part No. Component Description Resistance (Ohms)¹
9G-1950 Resistor - Blower Motor Speed Overall 2.0 ± .1; Tap 1.0 ± .05
6T-2217 Resistor - Starter/Diagnostic Conn 150 ± 7.5
9G-9988 24.9
8T-8813 Solenoid - A/C Clutch 14.4 ± 0.6
7X-1120 Solenoids - Down Shift, Up Shift, Lockup 33.7
9X-1413 Solenoid - Engine Shutdown 3.70 ± .37
3T-0062 Solenoid - Proportional 16.0
7N-7259 6.0
¹ At room temperature.
Resistor and Solenoid Specifications
Solenoid - 4 Way
Solenoid - Start Aid
OFF MACHINE SWITCH SPECIFICATIONS
Part No. Function Actuate Deactuate Contact Position
2M-9346 Stop Lamp Press (Module)
45 kPa MAX
(6.5 psi MAX)
5 kPa MIN
(0.5 psi MIN)
Normally Open
3E-2033
Secondary Brake Air Pressure (Trans)
Parking Brake Press (EMS)
640 kPa
(92.0 psi)
530 ± 40 kPa
(77.0 ± 6.0 psi)
Normally Open
3E-2034
Service Brake Air Pressure (Traction)
Service Brake Air Pressure (Trans)
80 kPa
(12.0 psi)
55 ± 20 kPa
(8.0 ± 3.0 psi)
Normally Closed
3E-2035 Brake Retarder Air Pressure
60 kPa
(8.5 psi)
28 ± 15 kPa
(4.0 ± 2.0 psi)
Normally Open
3E-7868 Transmission Filter Bypass Press (EMS)
210 ± 70 kPa
(30 ± 10 psi)
-
-
Normally Open
6T-7663 Engine Oil Pressure (EMS)
93± 20.8 kPa
(13.5 ± 3.0 psi)
68.9 ± 20.8 kPa
(10.0 ± 3.0 psi)
Normally Open
7N-7854
Brake Oil Temp (EMS)
Converter/Retarder Temp (EMS)
123.9 ± 2.8°C
(255 ± 9°F)
112.8°C MIN
(235°F MIN)
Normally Closed
7N-9785 Engine Coolant Temp (EMS)
107.2 ± 2.8°C
(225 ± 5°F)
91.0°C MIN
(196°F MIN)
Normally Closed
8N-1693 Engine Coolant Temp (Start Aid)
37.8 ± 2.8°C
(100 ± 5°F)
26.7°C MIN(80°F MIN) Normally Closed
8T-9792 Brake System Air Press (EMS)
517 ± 35 kPa
(75.0 ± 5.0 psi)
448 ± 35 kPa
(65.0 ± 5.0 psi)
1-3, Normally Closed
1-2, Normally Open
9G-3341 Transmission Oil Temp (EMS)
51.7 ± 2.8°C
(25 ± 5°F)
43.0°C MIN (110°F MIN) Normally Closed
9W-3187 Fuel Press (EMS)
93 ± 21 kPa
(13.5 ± 3.0 psi)
69 ± 21 kPa
(10.0 ± 3.0 psi)
Normally Closed
9X-1159 Steering Flow
4 grams
(.14 oz)
1.5 grams
(.05 oz)
Normally Open
9X-3040 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)
Normally Open
4
7
9
11
14
15
16
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
37
35
33
34
36
38
7
39
40
41
20
Rear Compartment
Right Side Wall
Of Rear Compartment
A
3
4
5
9
10
20
12
14
15
13
16
B
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
37
35
33
34
7
40
41
Machine Harness Connector And Component Locations
37 Contacts
*
L - 7I-5545
Transmission Control
D-13
C
A - 7I-5546
P-8W-8484
E-9
25 Contacts
D
A - 7I-5546
H - 7I-58I8
C-11 *
A - 7I-5546
Transmission Speed
Distributor
E-15
D
A - 7I-5546
J-8W-8339
C-12
D - 2A-6848
P-8W-8484
C-10
B
A - 7I-5546
Diagnostic Connector
(Starting And
Charging)
D-12
A
L - 7I-5545
Actual Gear Indicator
D-10
D
L - 7I-5545
Y - 8X-7271
C-13 *
P - 8W-8484
Engine Shutdown
Control
C-3
*
P-8W-8484
Operator Monitor
D-2
C
A - 7I-5546
Not Used
C-10
*
R - 7I-4854
Traction Aid
D-15
A
A - 7I-5546
5 - 6G-9462
D-5
L - 7I-5545
VV - 8W-64I9
D-10
A - 7I-5546
T - 7I-5825
D-4
D
R - 7I-4854
V - 7I-5609
C-14
E - 7I-5822
J - 8W-8339
B-14
A
A - 7I-5546
G - 8X-1249
E-3
C
P-8W-8484
Engine Overspeed
Monitor
F-1
A
A - 7I-5546
G - 8X-1249
E-3
V - 7I-5609
X - 5T-5311
A-14
C
A - 7I-5546
L - 7I-5545
E-14
C
A - 7I-5546
M - 8W-8471
D-4
*
L - 7I-5545
Transmission Control
E-13
C
A - 7I-5546
N - 7X-1784
E-10
*
VV - 8W-64I9
Shift Lever Switch
D-11
C
A - 7I-5546
R - 7I-4854
D-15
Y - 8X-7271
Z - 7T-34I8
A-13
H - 7I-58I8
K - 8W-8403
B-11
*
Z - 7T-3418
Transmission Switch
A-13
H - 7I-5818
Not Used
B-7
A
A - 7I-5546
G - 8X-I249
F-3
H - 7I-5818
Not Used
A-5
C
A - 7I-5546
P - 8W-8484
E-8
C
P-8W-8484
ZZ - 8X-1482
D-9
C - 8W-8300
P - 8W-8484
C-10
T - 7I-5825
TT - 7I-5823
B-1
A
F - 8X-I250
P-8W-8484
E-7
U - 7I-5824
TT - 7I-5823
B-1
B
L - 7I-5545
Diagnostic Connector
(Transmission
E-12 *
E - 7I-5822
Stop/Tail Lamp Module
B-14
C
P - 8W-8484
Neutral/Start Control
F-15
H - 7I-5818
Not Used
B-5
P-8W-8484
Supplemental Steering
Control
E-2
A
L - 7I-5545
Actual Gear Indicator
D-10
C
A - 7I-5546
Not Used
E-7 *
L - 7I-5545
Body Raise Switch
D-13
C
A - 7I-5546
P-8W-8484
E-8
C
L - 7I-5545
LL - 2A-7073
F-14
A
A - 7I-5546
Q - 7I-5849
E-5 *
V - 7I-5609
4 Way Solenoid
A-14
A
A - 7I-5546
Q - 7I-5849
E-5
Machine locations are repeated for connectors located close together.
* = Connector is located at the component
A = Connector is located behind the dash.
B = Connector is located behind the operators seat.
C = Connector is located in the rear compartment.
D = Connector Is located at the right side wall of the rear compartment.
Schematic
Location
7 Contacts
20 Contacts
6 Contacts
14 Contacts
10 Contacts
5 Contacts
9 Contacts
4 Contacts
8 Contacts
HARNESS CONNECTOR LOCATION CHART
Connectors
Machine
Location
Harness And/Or
Components
Schematic
Location
Connectors
Machine
Location
Harness And/Or
Components
1
2
3
4
5
6
7
8
9
10
12
11
8
8
9
13
14
15
12
16
17
18
13
9
19
22
17
20
21
22
23
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
101 RD BAT
513 OR A/C COMPRESSOR/REFRIGERANT PRESS SW
102 BU HDLMP
515 GY BLOWER MOTOR (HI)
103 YL AUX CKT
516 GN BLOWER MOTOR (MEDIUM)
105 BR KEY SW
517 BU BLOWER MOTOR (LO)
107 WH ENG SHUT - DOWN FIRE SUPPR
521 YL A/C SW TO REFRIGERANT SW
109 OR ALT OUTPUT (+) TERM.
522 WH A/C CLUTCH TO THERMOSTAT SW
112 PU MAIN POWER RELAY OUTPUT
537 GN TURN SIGNAL SW TO FLASHER
113 OR OPR MON PANEL 6+ SWITCHED
539 BU TURN SIGNAL INDICATOR BASIC/RIGHT
121 YL BACKUP ALARM TO LAMP
540 WH TURN SIGNAL INDICATOR LEFT
122 BU AUX CKT
A510 OR A/C PRESSURE CUT OUT SW SIGNAL 1
123 WH AUX CKT
124 GN A/C
602 WH DOME LAMP
126 PK XMSN CONT
604 OR STOP LAMP
132 PK AETA CONT
605 YL TURN LAMP - LEFT
136 GN SUPPL STER
606 GY TURN LAMP - RIGHT
137 OR SUPPL STER MOTOR FUSE
610 OR HEAD LAMP BASIC
138 GN AUTO LUBE PUMP TO PAYLOAD MON
611 PU HEAD LAMP HI
139 OR AUX CKT
614 PU PARK/TAIL/DASH LAMP
173 YL AUX CKT
619 GN HEAD LAMP LO
192 GN SUPPL STER BKR TO RELAY
639 WH LEFT HAND STOP/TAIL LAMP
Ground Circuits
640 GN RIGHT HAND STOP/TAIL LAMP
200 BK MAIN CHASSIS
Ground Circuits
201 BK OPR MON PANEL
700 PK AETA TEST SW
202 BK XMSN CONT
703 BU XMSN UP SOL
203 BK CHASIS DIAGNOSTIC
704 GY XMSN DOWN SOL
207 BK STARTER DIAGNOSTIC
705 PK XMSN LOCKUP CLUTCH SOL BASIC
209 BK FIRE SUPPR GROUND
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 SENSOR POWER SUPPLY
215 BK AETA CODING PIN 19
710 GN XMSN SPEED PICKUP SIGNAL
216 BK AETA CODING PIN 20
711 BR XMSN LEVER CODE 1
217 BK XMSN ID CODE 2
712 WH XMSN LEVER CODE 2
218 BK XMSN ID CODE 1
713 OR XMSN LEVER CODE 3
219 BK XMSN ID CODE 0
714 YL XMSN LEVER CODE 4
227 BK XMSN ID CODE 3
715 GN XMSN LEVER CODE 5
231 BK XMSN SW
716 BU XMSN LEVER CODE 6
237 BK KBI ETHER CONT GROUND
720 PU XMSN BRAKE SW
721 BR XMSN GEAR CODE 1
301
BU Starter No. 1 Sol
722 WH XMSN GEAR CODE 2
302 OR STARTER NO. 1 RESISTOR TO DIAGNOSTIC
723 OR XMSN GEAR CODE 3
304 WH STARTER NO.1 RELAY NO. 1 OUTPUT
724 YL XMSN GEAR CODE 4
306 GN
STARTER RELAY COIL TO NEUT START SW
OR KEY SW
725 GN XMSN GEAR CODE 5
307 OR
KEY SW TO NUET START SW OR VMIS
SENSOR MODULE
726 BU XMSN GEAR CODE 6
308 YL MAIN POWER RELAY COIL
727 GN SUPPL STER MOTOR RELAY
310 PU START AID SW TO START AID SOL
728 BU SUPPL STER CONT SW
311 WH START AID SOL TO TEMP SW
733 BR SWITCHING GEAR CODE 1 FRONT
313 GY STARTER NO.2 RESISTOR TO SIAGNOSTIC
734 WH SWITCHING GEAR CODE 2 FRONT
314 PU STARTER RELAY TO NO. 2 OUTPUT
735 OR SWITCHING GEAR CODE 3 FRONT
321 BR BCKP ALARM LAMP TRAVEL ALARM
736 YL SWITCHING GEAR CODE 4 FRONT
326 PU KEY SW "C" TERM
737 GN SWITCHING GEAR CODE 5 FRONT
327 PK SHUTDOWN SOL
767 WH AETA PICKUP POWER
768 OR AETA PICKUP XMSN
403 GN ALTERNATOR (R) TERM.
769 BU WHEEL SPEED PICKUP LEFT
405 GY OPR MON OIL PRESS. (LO SETTING)
770 GN WHEEL SPEED PICKUP RIGHT
406 PU OPR MON COOLANT TEMP
772 BR AETA RETARDER SW
407 PK OPR MON CONVERTER/RETARDER OIL TEMP
773 GY AETA SERVOVALVE
408 WH OPR MON SYSTEM AIR PRESS
774 YL AETA SOL LEFT
409 OR OPR MON NEUT
775 BR AETA SOL - RIGHT
410 WH OPR MON ACTION ALARM
777 PU BRAKE RELEASE MOTOR
411 PK OPR MON ACTION LAMP
794 YL PAYLOAD MON XMSN SPEED
412 BU OPRR MON COOLANT FLOW
891 BU NEUT START CONT TO PAYLOAD MON SYSTEM
413 BR OPR MON FUEL PRESS.
892 BR DATA LINK (-)
415 GN OPR MON TEST SW
893 GN DATA LINK (+)
417 GY PRIMARY STER SW
918 OR ENG OVERSPEED LIGHT AND HORN
419 YL OPR MON PARKING BRAKE
919 GN ENG OVERSPEED TEST SW
426 BR OPR MON POWER TRAIN OIL FILTER
930 BR BRAKE RETRACT SW TO RELAY COIL
437 BR OPR MON FUEL LEVEL TO FUEL FILTER JUMPER
943 OR TEHC SWING- JOY 2
441 OR ENG COOLANT TEMP GAUGE
A983 BU ENG THROTTLE CONT - SIGNAL
446 PU BRAKE OIL TEMP GAUGE
B770 YL FAN CONTROL SOLENOID POSITIVE
449 BU SPDOM SENDER (SIGNAL NO. 1)
B771 BR FAN CONTROL SOLENOID RETURN
450 YL TACH SENDER
B943 PK START AID CONT LAMP 1 OUTPUT
454 GN RETARDER INDICATOR LAMP
B946 OR START AID CONT MANUAL INPUT
462 YL SUPPL STER MOTOR INDICATOR
B954 YL START AID CONT TEST SW INPUT
470 PU CANE SW NEUT
B998 BU START AID CONT LAMP 2 OUTPUT
472 OR PARKING BRAKE SW TO OVERSTROKE SW
D966 GY AFTERCOOLER COOLANT LEVEL
481 GN CONVERTER TEMP SW TO BRAKE OIL TEMP SW
D983 PK SEVERE SHIFT LIMIT CONT RACK SOL
D996 PU TRANSMISSION CONT SERVICE SET
D997 YL TRANSMISSION CONT SERVICE CLEAR
Basic Machine Circuits
Lighting Circuits
Power Distribution Circuits
Accessory Circuits
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.
©
1993 Caterpillar
All Rights Reserved
Printed in U.S.A.
L25
L25
L40
L35
L39
A A
P
A
A
A
1
2
P
123-WH
614-PU
200-BK-14
200-BK-8
209-BK
A
200-BK-14
DD
5
2
1
2
1
2
10
3
6
5
2
1
7
8
4
F
E
D
12 11 10
C
B
A
12 11 10
3
1
2
1
1
2
2
8
2
1
1
9
4
2
3
1
2
1
1
2
2
1
2
4
3
1
1
2
2
6
2
4
1
5
3
4
5
5
4
3
10
9
3
1
7
6
1
2
5
5
2
3
1
5
3
2
4
1
3
2
1
1
3
1
2
1
2
1
4
2
3
5
4
2
4
9 8 7
9 8 7
6 5 4
6 4
3 2 1
F
E
D
3 2 1
C
B
A
L34
L31
L35
L39
L35
L34
L40
L40
L48
L48
L38
L38
L52
L52
L41
L41
L41
L42
L28
L33
L34
L34
L31
L31
L29
L29 L29
L27
L27
L22
L22
L14
L23
L18
L14
L3
L22
L23
L20
L46
L45
L32
L44
L49
L51
L50
L33
L49
L43
L42
L45
L30
L44
L26
L49
L1
L1
L1
L2 L2
L30
L40
L39
L35
L39
L40
L40
L39
L46
L47
L50
L51
L41
L43
L26
L44
L25
L25
L52
L52
L51
L50
L49
L51
L50
L49
L18
L51
L50
L49
200-BK
200-BK
308-YL
200-BK
L1
L24
L24
L24
L4
L4
L1
L9
L17
L16
L10
L18
L18
L11
L11L11
L9
L16
L10
L18
L4
L15
L6
L47
L6
L6
L19
L7
L42
202-BK
L24
L13
614-PU
L13
123-WH
L15
L7
L42
200-BK
200-BK
L9
L9
L10
L11
327-PK-14
209-BK
00
00
01
00
B998-BU
01
A-7/A-6
027X-1784
727-GN
462-YL
202-BK
201-BK
408-WH
201-BK
201-BK-14
LEFT LAMP
RIGHT LAMP
202-BK
614-PU
604-OR
640-GN
A
P
D-10
A-3
A-1
A-13
B-13
B-14
D-15
A-69F-4337
8W-6419
5T-2832
5T-2831
5T-2834
9G-0549
8X-7271
018W-9493
007I-5609
007I-5824
017I-5825
007I-4854
007I-5649
07
02
00
07
02
01
058X-1249
03
017I-5546
CHG
CC
CC
C
4N-6580
C
H
C
A
A
W
W
W
W
W
W
W
P
173-YL
TURN LAMP
BREAKER
6N-8589
A
A
A
A
A
101-RD-10
J
J H H J H
202-BK
450-YL
J
450-YL
CC
P
N
N
A
P
N
A
J
P
A
AA
619-GN-14
103-YL-14
8
102-BU-14
Q
A
Q
A
FUEL FILTER
137-OR-12
943-PK
B954-YL
123-WH
200-BK
308-YL
6
8
5
2
4
3
9
7
126-PK
410-WH
124-GN-14
200-BK
727-GN
307-OR
326-PU
308-YL
201-BK
411-PK
123-WH
200-BK-14
200-BK-14 200-BK-14
200-BK
310-PU
462-YL
103-YL-14
767-WH
700-PK
454-GN
614-PU
605-YL
606-GY
449-BU
470-PU
707-PU
202-BK
201-BK
794-YL
122-BU
200-BK
A
403-GN
470-PU
522-WH-14
200-BK-14
521-YL-14
124-GN-14
517-BU-14
516-GN-14
515-GY-14
MOTOR
521-YL-14
MOTOR
124-GN-14
2
200-BK
614-PU
1
1
2
327-PK-14
WH/RD-14
WH/RD-14
3
BK-14
4
BK-14
5
200-BK-14
2
200-BK-14
1
515-GY-14
515-GY-14
200-BK-14
BLOWER
9G-8697
PANEL LAMP
7N-5876
THERMOSTAT
3E-5464
BLOWER SW
6P-3236
BLOWER
9G-8697
522-WH-14
614-PU
TACHOGRAPH
7D-1513
3
2
1
727-GN
728-BU
138-GN
326-PU
307-OR
200-BK-14
109-OR
112-PU
109-OR
101-RD
201-BK
614-PU
919-GN
918-OR
918-OR
919-GN
200-BK
202-BK
STRAP AS. 7G-1060
173-YL
123-WH
314-PU
313-GY
304-WH
302-OR
203-BK
311-WH
121-YL
126-PK
132-PK
408-WH
123-WH
103-YL-14
767-WH
700-PK
454-GN
2G-4177
A-7
A-7
A-7
A-7
A-7
A-6
310-PU
202-BK
202-BK
462-YL
A-15
C-5
A-1
B-1
113-OR
D-5
00
327-PK-14
450-YL
727-GN
00
02
522-WH-14
C-11
IGN
SEND
GND
9
201-BK
307-OR
126-PK
201-BK
136-GN
728-BU
326-PU
306-GN
470-PU
327-PK-14
107-WH-14
A
727-GN
308-YL
403-GN
450-YL
123-WH
405-GY
308-YL
727-GN
326-PU
307-OR
470-PU
728-BU
449-BU
794-YL
707-PU
411-PK
450-YL
410-WH
306-GN
201-BK
113-OR
409-OR
202-BK
614-PU
123-WH
306-GN
136-GN
891-BU
138-GN
614-PU
107-WH-14
123-WH
IGN
614-PU
SEND
GND
610-OR-14
611-PU-14
611-PU-14
HEAD LAMP
DIMMER SW
2H-1855
539-BU
540-WH
614-PU
619-GN-14
611-PU-14
200-BK
SIG
+ -
LAMP
5D-0019
200-BK
614-PU
LAMP
5D-0019
SPEEDOMETER
3T-6256
IGN
SEND
GND
122-BU
121-YL
126-PK
132-PK
136-GN
138-GN
107-WH-14
113-OR
105-BR
450-YL
327-PK-14
138-GN
727-GN
136-GN
113-OR
107-WH-14
113-OR
107-WH-14
521-YL-14
522-WH-14
201-BK-14
521-YL-14
202-BK
707-PU
794-YL
126-PK
J
449-BU
202-BK
7 472-OR
L32
CC
A-6KK
WW
CABLE AS.
4
W
L
C
P
D
P
D-6
BB
WIRE AS.
V
T
S
R
J
H
F
D
A
HARNESS AS.
LOCPART NO.IDENT
327-PK-14
109-OR-6
L32
521-YL-14
UU
513-OR-14
Z
G
E
X
U
Q
P
C
TT
L
M
2
1
3
START
AID SW
6T-6066
200-BK
M
A
103-YL-14
700-PK
L32
173-YL
12
139-OR
777-PU-10
101-RD-6
109-OR-6
BRAKE RETRACT
112-PU-12
777-PU-10
101-RD-6
109-OR-6
5
W
5
4
3
6
2
1
NEUTRAL
1
2
891-BU
PYLD MNTR
126-PK
XMSN
SPEED
DISTRIBUTOR
3T-5438
T
T
3
STEERING SW
9X-1159
BK-18
200-BK-8
BRAKE
RETRACT
RELAY
3E-7279
728-BU
2
1
8
7
6
5
4
3
2
1
5
4
3
2
1
412-BU
406-PU
405-GY
413-BR
403-GN
441-OR
14
446-PU
407-PK
426-BR
201-BK
201-BK
481-GN
481-GN
L21
L21
4
202-BK
202-BK
L27
A
200-BK
200-BK
200-BK-14
3
4
BK-18
1
2122-BU
728-BU
4
200-BK
AIR DRYER
2G-2159
201-BK
426-BR
446-PU
407-PK
481-GN407-PK
Q
BRAKE OIL
TEMP SW
7N-7854
201-BK
T
5
706-BR
D-5
5
112-PU-12
10A
139-OR
8
6
5
7
3
4
1
2
138-GN
123-WH
121-YL
410-WH
737-GN
736-YL
735-OR
734-WH
306-GN
107-WH-14
131415
15 14
103-YL-14
201-BK
200-BK
OPERATOR
MONITOR
8C-3508
COOL TEMP
767-WH
216-BK
700-PK
213-BK
ID CODE 1
930-BR
ID CODE 2
139-OR
619-GN-14
102-BU-14
103-YL-14
614-PU
ENG OIL PR
BRAKE ON
PRIM STER
8
7
6
3
4
5
2
1
A
AUX START
RECEPTACLE
GROUND
+ BATTERY
11
L29
773-GY
V
R
767-WH
202-BK
767-WH
770-GN
769-BU
775-BR
774-YL
212-BK
213-BK
OR
216-BK
11
1
2
8
9
4
14
5
7
6
10
13
LAMP
610-OR-14
610-OR-14
2
FLASHER
8D-6946
767-WH700-PK
32
AA
A-300
P
138-GN
794-YL
P
XMSN FILTER
E
891-BU
E
E
E
E
CV/RTD TEMP
22
L12
TRACTION AID
TEST SW
6T-6066
A
919-GN
308-YL
310-PU
415-GN
D
D
DD
D
HH
F
F
F
L11
K
BK-18
WH-18
450-YL
200-BK
ENGINE SPEED
PICKUP
3E-7886
136-GN
301-BU
DD
JJ
DISCONNECT SW
7N-0718
L14
304-WH
207-BK
302-OR
306-GN
RESISTOR
6T-2217
304-WH
L
202-BK
202-BK
737-GN
736-YL
735-OR
734-WH
733-BR
202-BK
126-PK
TO
TRANSMISSION
GEAR INDICATOR
7
6
3
3
2
4
1
2
1
5
201-BK
437-BR
412-BU
405-GY
406-PU
413-BR
403-GN
426-BR
407-PK
446-PU
ALTERNATOR
OPERATOR MON/
OVERSPEED
TEST SW
6T-6066
415-GN
919-GN
30
202-BK
202-BK
202-BK
L
L
BK-18
BK-18
202-BK
767-WH
767-WH
E
200-BK
200-BK-14
200-BK
200-BK
202-BK
GG
HH
EE
CC
L19
202-BK
604-OR
537-GN
606-GY
605-YL
539-BU
540-WH
S
S
S
S
S
S
H
YY
RD-00
H
H
KK
JJ
HH
KK
619-GN-14
BULB
7N-9943
200-BK-14
200-BK-14
200-BK-14
L10
U
U
U
T
T
T
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
919-GN
405-GY
419-YL
123-WH
GRAY
918-OR
BLACK
COLOR
450-YL
ABBREV
3
1
P
2
4
PINK
6
B998-BU
5
YELLOW
ORANGE
KH
201-BK
449-BU
417-GY
419-YL
201-BK
201-BK
415-GN
437-BR
413-BR
COOL FLOW
311-WH
412-BU
WHITE
411-PK
207-BK
RED
203-BK
410-WH
310-PU
409-OR
9
BR
408-WH
1
200-BK-10
407-PK
L23
522-WH-14
PU
406-PU
513-OR-14
311-WH
13
302-OR
405-GY
426-BR
403-GN
201-BK
BRAKE
RETRACT
8C-9514
MOTOR
777-PU-10
200-BK-14
639-WH 3
4
2
TAIL IN
113-OR
WH
BK
WH
BK
(L)
S-2
(R)
S-1
2W-0104
PROPORTIONAL
SOLENOID
3T-0062
767-WH
202-BK
5
6
2
1
3
4
767-WH
202-BK
769-BU
770-GN
V
3
2
1
BK
WH
GROUND
SIGNAL
+V
C
B
A
GROUND
SIGNAL
+V
A
3
B
C
6
FUEL PR
BK AIR PR
614-PU
NEUTRAL
614-PU
1
ALARM
614-PU
PANEL
LAMP
7N-9967
614-PU
PANEL
LAMP
7N-9967
PANEL
LAMP
7N-9967
614-PU
PANEL
LAMP
7N-9967
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
614-PU
9
200-BK
306-GN
SUPPLEMENTAL
STEERING MOTOR
2G-6158
BK-00 1
STARTER
3T-8967
FUSE
3K-8782
10A
12V BATTERY
9G-2648 STD
12V BATTERY
9G-2648 STD
J
H
7
6
H
FF
HH
7
GG
01
EE
CC BB
RD-00
RD-00
T
A
304-WH-10
BK-00
STEERING
MOTOR
RELAY
3E-0154
START RELAY
3E-7279
10
8
462-YL
515-GY-14
BK-00
RD-00
BK-00
G
S
MTR BAT
MOTOR
MOTOR
200-BK
NEGPOSNEGPOS
200-BK
ENGINE
OIL SW
6T-7663
L21
BK-6
AIR
CONDITIONER
CLUTCH
SOLENOID
8T-8813
ALTERNATOR
100-5047
ENGINE
SHUTDOWN
SOLENOID
9X-1413
TO
ENGINE
BLOCK
JJ
C
UU
2
1
P
F
101-RD-10
2
8
614-PU
RUNNING
LAMP SW
6T-3989
720-PU
PK-18
YL-18
BK-18
GROUND
5
3
2
794-YL
202-BK
202-BK
GY-18
WH-18
SPEED
+ BATTERY
7
415-GN
200-BK
462-YL
ENG OVRSPD
WARNING LAMP
7N-9967
930-BR
B946-OR
123-WH
727-GN
200-BK
307-OR
308-YL
462-YL
123-WH
14
13
12
11
SHIFT
LEVER SW
9W-0681
711-BR-18
712-WH-18
713-OR-18
714-YL-18
715-GN-18
716-BU-18
202-BK-18
470-PU-18
3
4
5
8
9
1
2
10
7
6
LEVER 1
LEVER 2
LEVER 3
LEVER 4
LEVER 5
GND VERIFY
GROUND
NEUTRAL
711-BR
712-WH
713-OR
714-YL
715-GN
716-BU
202-BK
470-PU
121-YL
321-BR
321-BR
1
2
3
4
5
6
9
7
10
8
SUPP
STEER SW
6T-3990
450-YL
1
2
3
200-BK
4
17
441-OR
16
4
5
12
14
446-PU
5
6
L15
7
8
19
18
02
15
237-BK
611-PU
A G
8
6
4
7
1
9
2
3
105-BR
1
13
200-BK
BK-18
2
200-BK
539-BU
201-BK
539-BU
411-PK
201-BK
200-BK
611-PU
411-PK
123-WH
308-YL
454-GN
611-PU
200-BK
326-PU
540-WH
20
454-GN
11
307-OR
LEFT TURN
LAMP
7N-9967
3
TEST
727-GN
123-WH
522-WH-14
540-WH
BK-18
A G
892-BR
893-GN
A
202-BK
A
L
START/CHARGE
DIAGNOSTIC CONNECTOR
9
4
7
3
5
2
462-YL
200-BK
310-PU
415-GN
411-PK
410-WH
405-GY
113-OR
201-BK
201-BK
126-PK
408-WH
B954-YL
419-YL
412-BU
426-BR
407-PK
409-OR
J
ACTION
ALARM
9G-9813
308-YL
00
307-OR
P
H
G
LL
L
454-GN
411-PK
EPTCII
SERVICE
SET SW
9D-3721
F
EPTCII
SERVICE
CLEAR SW
9D-3721
201-BK
540-WH
539-BU
943-PK
M
200-BK
103-YL-14
602-WH
DOME
LAMP
8C-9678
3
202-BK
C
202-BK
202-BK
733-BR
GN-18
BK-18
PU-18
RD-18
YL-18
OR-18
BR-18
BU-18
WH-18
PK-18
E
D997-YL
126-PK
D
202-BK
202-BK
126-PK
202-BK
D983-PK
200-BK
454-GN
720-PU
202-BK
01
202-BK
D996-PU
B
710-GN
202-BK
BK-18
WW
WW
02
BK-18
BK-18
P
5
604-PU
706-BR
BK-18
L
772-BR
767-WH
L
200-BK
321-BR
200-BK
200-BK
419-YL
472-OR
A
L
707-PU
202-BK
470-PU
321-BR
121-YL
202-BK
707-PU
126-PK
D983-PK
711-BR
712-WH
713-OR
714-YL
715-GN
716-BU
706-BR
720-PU
126-PK
707-PU
202-BK
218-BK
219-BK
703-BU
704-GY
705-PK
709-OR
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
227-BK
217-BK
200-BK
LL LL
103-YL-14
123-WH
449-BU
614-PU
614-PU
BRAKE OIL
TEMP GAGE
4W-2067
2
TACHOMETER
8C-5469
COOLANT
TEMP GAGE
4W-0483
919-GN
6
415-GN
614-PU
918-OR
449-BU
PROP SOL
TEST
ID CODE 0
ID CODE 4
ID CODE 3
RIGHT SP
LEFT SP
+ BATTERY
GROUND
RIGHT SOL
LEFT SOL
XMSN SP
11
16
20
19
18
2
17
13
12
10
8
7
6
GN-18
4
1
15
3
SPEED IN
L38
6
4
5 700-PK
767-WH
710-GN
TRACTION AID
CONTROL
3E-9224
R
202-BK
768-OR
132-PK 1
2
3
202-BK
769-BU
770-GN
775-BR
774-YL
773-GY
202-BK
212-BK
200-BK
D983-PK
200-BK
200-BK
200-BK
B
200-BK
103-YL-14
200-BK
614-PU
6 5
9
8
D983-PK
138-GN
D
930-BR
139-OR
449-BU
1
BRAKE
RETRACT SW
6T-6066
200-BK
450-YL
450-YL
200-BK
200-BK
LAMP
5D-0019
123-WH
LAMP
5D-0019
123-WH 123-WH
123-WH
446-PU
441-OR
441-0R
LL
200-BK
200-BK
200-BK
200-BK
H
A510-OR
B770-YL
B771-BR
138-GN
200-BK
A510-OR
NOTE B
918-OR
LL
B771-BR
102-BU-14
H
H
TRACTN AID
OR-18 4
+12V
5
767-WH
9
BRAKE
772-BR772-BR
NEUTRAL START
CONTROL
7X-1362
200-BK
200-BK
470-PU
307-OR
WH-18
BR-18
BU-18
GY-18
BK-18
GN-18
PU-18
OR-18
126-PK
768-OR
RIGHT TURN
LAMP
7N-9967
306-GN
409-OR
START SW
NEUTRAL
GROUND
2
3
1
YL-18
OR-18
1
9
4
5
2
6
7
8
3
GN-18
OPR PANEL
P
P
START RELAY
PK-18
+ BATTERY
DOOR
COURTESY
LAMP SW
9D-4068
BK-18
PARKING
BRAKE SW
3E-2033
201-BK
H
201-BK
BRAKE
AIR SW
8T-9792
3
2
1
HIGH BEAM
INDICATOR
LAMP
7N-9967
ACTION
LAMP
7N-9967
H
1
A
F
G
RETARDER
BRAKE SW
3E-2035
202-BK
202-BK
G
G
F
408-WH
G
G
BK-18
BK-18
G
SERVICE/RETARDER
BRAKE
TEE
SERVICE
BRAKE SW
3E-2034
6
STOP
LAMP SW
2M-9346
SERVICE
BRAKE SW
3E-2034
L30
105-BR
307-OR
B954-YL
308-YL
237-BK
B943-PK
307-OR
F
200-BK
450-YL
537-GN
Q
Q
Q
41
540-WH
539-BU
605-YL
606-GY
3
2
6
5
4
1
Q
Q
KK
Q
Q
Q
-+
8
U
TT
7I-5823
10
GG
123-WH
F
F
F
Q
Q
LAMP
7N-5876
AIR PRESS
GAGE
1W-3306
200-BK
614-PU
Q
A
200-BK-14
200-BK-14
A
326-PU
138-GN
L5
L5
AS
3
2
6
5
L8
RD-18
WH-18
L8
107-WH-14
327-PK-14
200-BK
326-PU
306-GN
ENGINE SHUTDOWN
CONTROL
9G-9287
P
+ BATTERY
GROUND
707-PU
202-BK
REFRIGERANT SW
9W-0549
521-YL-14
513-OR-14
L8
L8
L8
10
7
9
1
5
2
8X-1482
3
4
L48
L48
GA
E-7
E-10
D-4
B-13
AA
B-12
B-11
E-3
RD-00
E-3
GN
GN
ENG SOL
GN
00
BK-18
BK-18
2A-7073LL
B-1000
GY
513-OR-14
H
H
2A-6781
F-14
GN
GN
GN
L5
VV
VV
VV
L35
313-GY
314-PU
306-GN
314-PU
BU
TURN SW
9G-5589
313-GY
EPTC-II
TRANSMISSION
CONTROL
3E-5390
202-BK
THROTTLE
200-BK-14
START AID
SOLENOID
7N-7259
COOLANT
SENDER
6N-5926
COOLANT SW
7N-9785
FUEL SW
9W-3187
314-PU
201-BK
200-BK-14
327-PK-14
YY
RESET
437-BR
537-GN
403-GN
310-PU
16
11
5
19
18
17
15
14
6
3
413-BR
7
13
20
9
4
8
10
2
1
12
EPTCII
DIAGNOSTIC CONNECTOR
311-WH
203-BK
207-BK
308-YL
441-OR
201-BK
105-BR
109-OR
112-PU
101-RD
314-PU
307-OR
304-WH
302-OR
313-GY
L36
L37
327-PK-14
L31
202-BK
720-PU
202-BK
202-BK
F
F
F
F
F
F
408-WH
892-BR
406-PU
201-BK
202-BK
201-BK
313-GY
306-GN
202-BK
SUPP
STEERING
LAMP
7N-9967
BU
PU
710-GN
4
3
707-PU
202-BK
L
2
TT
M
2
1
BK
RD
201-BK
410-WH
GY-18
GN-18
GN-18
WH-18
PK-18
BK-18
PU-18
BU-18
YL-18
OR-18
BR-18
OPR PANEL
KEY SW
STER SW
STER SW
GROUND
+ BATTERY
ALTERNATOR
MAG SW
2
1
9
8
7
6
5
4
3
2
1
P
P
SUPPLEMENTAL
STEERING CONT
EMS
3E-5184
OPERATOR STATION
OFF (KEY)
308-YL
728-BU
200-BK
403-GN
727-GN
417-GY
200-BK
403-GN
412-BU
201-BK
BK-18
BK-18
327-PK-14
209-BK-14
200-BK
H
Q
B-15
Q
1
BACKUP
ALARM SW
9G-7204
H
B-10
L5
446-PU
Q
MAIN POWER
RELAY
3T-0376
105-BR
KEY
START SW
9G-7641
326-PU
101-RD-6
L37
ST
192-GN-10
103-YL-14
Q
112-PU-12
00
RD-18
BK-18
SPARE
B-10
Q
200-BK
308-YL
Q
200-BK
406-PU
6
L28
112-PU
Q
893-GN
D997-YL
D966-PU
101-RD
112-PU-14
SERVICE
112-PU-14
Q
CLEAR
RD-00
L37
109-OR-6
00
192-GN-10
36
L37
209-BK-14
L36
112-PU-10
107-WH-14
DOME & STOP
LAMP
BREAKER
6N-8589
KEY
BREAKER
9G-9487
ENGINE
SHUTDOWN/FS
BREAKER
6N-8589
112-PU-12
SUPPLEMENTAL
STEERING
9G-9487
ALT BREAKER
9S-4693
122-BU
126-PK
132-PK
138-GN
113-OR
123-WH
AIR DRYER
XMSN CONTROL
TRACTION AID
PAY MON
OPER MON
GAGES
101-RD-10
BACKUP ALARM
ABUS SHIFT
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-14
101-RD-10
101-RD-10
ALT
136-GN
R
BK-18
L37
BK-18
136-GN
124-GN-14
102-BU-14
132-PK
107-WH-14
122-BU
121-YL
112-PU-12
+
YL-18
441-OR
126-PK
611-PU-14
AIR CONDITIONER
BREAKER
6N-8589
FUSES
3K-8782
FUSE HOLDERS
4K-5122
BRAKE RETRACT
BREAKER
3T-8728
102-BU-14
124-GN-14
101-RD-6
101-RD-10
10A
DATA LINK -
FRONT GR 5
105-BR
FRONT GR 4
FRONT GR 3
109-OR-6
FRONT GR 2
101-RD-10
FRONT GR 1
DATA LINK +
WH-18
HEAD LAMP
BREAKER
3T-2662
105-BR
105-BR
L36
RD
BK
200-BK-14
LEVER 5
774-YL
775-BR
LEVER 4
LEVER 3
LEVER 2
LEVER 1
ID CODE 3
ID CODE 2
ID CODE 1
ID CODE 0
7
GND VERIFY
GND VERIFY
LKUP SOL
GROUND
773-GY
BED RAISE
UP SOL
DOWN SOL
RETARDER
+ BATTERY
109-OR-6
5
H
A
13
19
16
21
25
7
18
15
6
17
4
3
2
14
12
10
11
8
23
20
9
24
1
777-PU-10
203-BK
727-GN
306-GN
462-YL
200-BK-8
101-RD-6
310-PU
450-YL
515-GY-14
6
5
4
3
+V
419-YL
2
1
BRAKE
SECONDARY
BRAKE SW
3E-2033
GEAR 1
VV
202-BK
209-BK-14
OR-18
GEAR 2
4
GEAR 3
614-PU
606-GY
605-YL
2
604-OR
6
1
GEAR 4
7
5
A
GEAR 5
37
J
321-BR
437-BR
RESISTOR
9G-1950
11
12
4
18
2
6
20
16
1
15
9
19
8
7
5
10
17
3
13
462-YL
A
207-BK
122-BU
202-BK
101-RD-6
J
202-BK
35
34
33
32
31
28
29
27
R
26
25
24
23
22
21
11
20
19
18
17
16
15
14
13
12
9
8
1
G
G
4
G
G
G
G
G
G
G
G
G
L16
L43
614-PU
614-PU
Q
Q
Q
A
L46
N
N
H
STOP IN
L34
L39
200-BK-10
12
BU-18
3
202-BK
202-BK
202-BK
202-BK
C
6
5
472-OR
A
L27
L26
101-2991
202-BK
Y
L
231-BK
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
3
D-900ZZ
B
GROUND
SIGNAL
+V
C
B
A
CONTROL GP
6V-5828
721-BR-18
722-WH-18
723-OR-18
724-YL-18
725-GN-18
726-BU-18
231-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
UP SHIFT
SOLENOID
7X-1120
LOCKUP
SOLENOID
7X-1120
DOWN SHIFT
SOLENOID
7X-1120
2
2
2
1
1
1
Z Z Y
Y
Y
YY
XMSN
SPEED
SENDER
3E-6955
705-PK
704-GY
202-BK
202-BK
202-BK
703-BU
J
H
A
B
C
D
E
I
F
G
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
X
V
V
4
1
2
3
WHEEL SPEED
SENDER
3T-2469
WHEEL SPEED
SENDER
3T-2469
X
X
PARK/TURN
LAMP
3E-7741
4
3
7
2
XMSN SPEED
10
ID CODE 4
707-PU
A
PARK/TURN
LAMP
3E-7741
L17
WH
GN
PU
STOP/TAIL
LAMP MODULE
7X-1670
E
4 WAY
SOLENOID
9G-9988
769-BU
202-BK
767-WH
202-BK
767-WH
770-GN
L18
L43
L26
L2
202-BK
101-2962
774-YL
775-BR
202-BK
202-BK
202-BK
773-GY
202-BK
202-BK
202-BK
215-BK
200-BK
200-BK
215-BK
L14
1
2
1
6
4
3
5
E J
605-YL
614-PU
200-BK-14
321-BR
604-OR
606-GY
132-PK
BACK-UP
ALARM
3T-1815
BACK-UP
LAMP
9X-1439
STOP/
TAIL
LAMP
6V-1108
TURN
LAMP
6V-1119
321-BR
640-GN
606-GY
321-BR
639-WH
605-YL
J
768-OR
6
446-PU
426-BR
123-WH
207-BK
CONVERTER SW
7N-7854
426-BR
T
201-BK
XMSN OIL SW
9G-3341
XMSN
FILTER SW
3E-7868
BRAKE OIL
SENDER
8N-3844
201-BK
T
481-GN
T
707-PU
202-BK
202-BK
L12
L12
101-RD-10
112-PU-10
481-GN
L19
ON
202-BK
8W-8484
710-GN
413-BR
767-WH
03
767-WH
202-BK
767-WH
202-BK
231-BK
201-BK
311-WH
311-WH
311-WH
200-BK
L35
327-PK-14
306-GN
306-GN 306-GN
310-PU
310-PU
200-BK
200-BK
450-YL
306-GN
123-WH
614-PU
123-WH
450-YL
123-WH
123-WH
L43
307-OR
326-PU
L25
727-GN
138-GN
107-WH-14
OFF
B
R
327-PK-14
8W-8471
109-OR-6
138-GN
107-WH-14
113-OR
200-BK
308-YL
308-YL308-YL
200-BK
200-BK
426-BR 426-BR
200-BK-14
308-YL
326-PU
307-OR
105-BR
727-GN
200-BK
200-BK
200-BK
124-GN-14
410-WH
126-PK
411-PK
201-BK
126-PK
126-PK
105-BR
105-BR
123-WH
123-WH
103-YL-14
540-WH
539-BU 539-BU
540-WH
103-YL-14
201-BK
614-PU
614-PU
614-PU
HI BEAM
HEAD LAMP
9X-7170
LOW BEAM
HEAD LAMP
9X-7169
200-BK
7I-5545
7T-3418
8W-8339
7I-5818
540-WH
5
614-PU
7
619-GN-14
3
611-PU-14
2
539-BU
1
BK-18
200-BK-14
200-BK-14
BK-18
T
200-BK
200-BK-14
WH-18
RD-18
WH-18
RD-18
LOW BEAM
HEAD LAMP
9X-7169
HI BEAM
HEAD LAMP
9X-7170
540-WH
614-PU
611-PU-14
619-GN-14
539-BU
614-PU
539-BU
614-PU
611-PU-14
619-GN-14
611-PU-14
619-GN-14
B770-YL
109-OR-10
FRAME
GROUND
614-PU
103-YL-14
103-YL-14
201-BK 201-BK
L11
918-OR
200-BK
200-BK
200-BK
449-BU
614-PU
614-PU
200-BK
200-BK
123-WH
200-BK
200-BK
200-BK
200-BK
COOLANT
FLOW SW
9X-3040
8X-1250
7I-5822
2A-6648
FF
00
02
BODY
RAISE SW
8C-5681
BK
200-BK
200-BK
200-BK
B998-BU
727-GN
101-RD-6
101-RD-6
2
PU
614-PU
L14
5T-5311
L3
EE
200-BK
YY
200-BK
L45
L32
BK-6
N
200-BK
109-OR-6
L42
614-PU
614-PU
614-PU
614-PU
L43
306-GN
SERVICE METER
6T-7337
STOP/
TAIL
LAMP
6V-1108
614-PU
614-PU
H
OPERATOR STATION
TURN
LAMP
6V-1119
304-WH
200-BK
200-BK
200-BK
403-GN
200-BK
201-BK-14
200-BK
200-BK
B946-OR
200-BK
BK
200-BK
ZZ
H
H
H
307-OR
200-BK
201-BK
201-BK
201-BK
M
521-YL-14
513-OR-14
S
201-BK
K
NOTE
FF
L17
L12
BK-000
BK-00
BK-00
203-BK
203-BK
207-BK
200-BK
BK-00
P
VV
Y
N
TO ENG
BLOCK
TO
FRAME
RETARD LAMP
7N-9967
310-PU
L17
201-BK
G
201-BK
C
201-BK
8W-8300
L17
HH
6D-1126
302-OR
GN
GN
K
2W-8662
02
L20
T
6G-9462
311-WH
COOLANT SW
8N-1693
P
K
301-BU
TO ENGINE
OVERSPEED
CONTROL
L13
1
K
200-BK
406-PU
403-GN
E-12
412-BU
200-BK
00
201-BK
405-GY
R
209-BK-14
H
H
HH
8X-7029
405-GY
441-OR
413-BR
DD
B-10
201-BK
018W-8403
202-BK
202-BK
NOTE A: NORMALLY OPEN BEFORE REFIGERENT 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 THE XMSN SHIFTER IN NEUTRAL.
THIS SCHEMATIC IS FOR THE 772B AND 773B TRUCKS(8C-4577 CHG 01)
B
B
BRAKE MASTER
CYLINDER
OVERSTROKE SW
7V-5647
472-OR
419-YL
200-BK
G
OPERATOR STATION
ATCH
203-BK
202-BK
311-WH
BB
311-WH
200-BK
8
ATCH
14
767-WH
ATCH
105-BR
K
113-OR
32
G
G
32
F
F
32
G
G
G
G
15A
15A
15A
10A
20A
30A
15A
10A
15A
NOT
USED
NOT
USED
NOT
USED
CAB / FRAME
GROUND
CAB GROUND
Q
T
P
P
T
202-BK
202-BK
NOTE B
NOTE B
E
D
A
B
C
C
B
A
NOTE B: CONNECTORS FOR QUARRY TRUCK FAN CLUTCH COMPONENTS
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.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
TURN SIGNAL CIRCUIT.
START AID CIRCUIT.
TRANSMISSION CONTROL CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.
