SENR4759
June 1990
966F Wheel Loader
Electrical System
4YG1-UP
3XJ1-UP
8BG1-UP
©
1990 Caterpillar
All Rights Reserved
Printed in U.S.A.
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Backup E-12 1 Sensor - Hydraulic Temp A-2 20
Alarm - Fault E-3 C Sensor - Trans Oil Temp A-11 21
Alternator E-10 2 Sensor - Trans Output Speed B-1 22
Battery F-12 3 Solenoid-A/C Clutch E-10 23
Battery E-12 4 Solenoid - Bucket Float B-5 E
Breaker - Alternator C-12 D Solenoid - Bucket Kickout B-5 E
Breaker - Blower Motors B-5 E Solenoid - Engine Shutdown E-10 24
Breaker - Condenser Fan Motors C-5 E Solenoid - Lift Kickout B-4 E
Breaker - Engine Shutdown C-12 D Solenoid - Ride Control A-1 25
Breaker - Main C-12 D Solenoid - Ride Control (German Roading) D-1 25
Breaker - Running Lamp C-12 D Solenoid - Start Aid A-11 26
Buffer - Fuel Level C-2 5 Switch - Backup Alarm B-2 A
Control - Engine Shutdown C-10 6 Switch - Beacon C-3 A
Converter - Voltage F-4 A Switch - Blower F-7 A
Dryer-Brake Air A-10 7 Switch - Brake Oil C-1 27
Flasher C-5 A Switch - Brake Oil C-2 27
Fuse - Holder B-4 E Switch - Bucket Positioner A-1 28
Fuse - Holder C-12 D
Switch - Bucket Positioner
(German Roading)
D-1 28
Ground - Engine To Frame D-10 8 Switch - Dimmer F-2 A
Ground - Cab To Frame A-7 9 Switch - Disconnect F-11 29
Ground - Platform (Cab) A-7 E Switch - Engine Oil A-12 30
Horn - Forward (German Roading) D-1 10 Switch - Ether Aid Coolant A-12 31
Lamp - Master Warning (CMS) B-3 B Switch - Flood Lamp E-6 C
Meter - Service E-7 A Switch - Front Wiper D-3 B
Monitor - Computerized System (CMS) E-4 B Switch - Horn D-2 A
Motor - Blower D-8 E Switch - Hydraulic Oil Level A-2 32
Motor - Blower E-8 A Switch - Key Start D-6 C
Motor - Front Washer B-10 11 Switch - Lift Positioner A-1 33
Motor - Front Wiper E-3 A Switch - Lift Positioner (German Roading) D-1 33
Motor - Rear Washer B-11 12 Switch - Parking Brake C-1 34
Motor - Rear Wiper E-6 A Switch - Primary Steering B-1 35
Motor - Starter F-11 13 Switch - Rear Wiper D-3 B
Motors - Condenser Fan A-5 E Switch - Refrigerant A-7 E
Receptacle - Auxiliary Start F-11 14 Switch - Ride Control C-3 B
Relay - Condenser Fan A-6 A Switch-Running Lamp D-6 C
Relay - Main C-12 D Switch - Secondary Brake Air Press F-8 36
Relay-Start C-12 D Switch - Start Aid D-6 C
Resistor - Blower Speed D-8 A Switch - Stoplamp C-2 37
Resistor - Monitor System Voltage(CMS) C-12 D Switch - Supplemental Steering B-2 38
Resistor - Starting System Diagnostics F-10 1 5 Switch - Thermostat E-7 A
Sender-Fuel Level C-1 16 Switch - Trans Neutral B-1 A
Sensor - Brake Air Pressure C-1 1 7 Switch - Turn Signal C-5 A
Sensor - Coolant Temp B-12 18
Sensor - Engine Speed A-11 19
A = Components located in operator compartment.
B = Components located in operator compartment - Dash.
C = Components located in operator compartment - Rt. Console.
D = Components located on relay panel.
E = Components located in service compartment - At. Side.
Connector Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
A-8R8159
B-8R9204
B-8
A-8R8159
D-8R8162
E-10
B - 8R9204
Computerized Monitoring System
E-4
A-8R8159
Engine Shutdown Control
C-10
20 Contacts
A-8R8159
Diagnostic Connector
B-12
B-8R9204
L - 8R7067
A-3
12 Contacts
A-8R8159
B - 8R920
B-8
B-8R9204
L - 8R7067
C-3
A-8R8159
E-8R8165
A-6
F-8R8164
Z-8R8169
D-2
A - 8R8159
F-8R8164
F-6
B-8R9204
JJ - 8R7202
D-5
A-8R8159
F-8R8164
F-6 6 Contacts
Z-8R8169
Flasher
C-5
B - 8R9204
L - 8R7067
D-3
B-8R9204
P - 8R7199
D-6
B - 8R9204
M-8R9296
B-5
E-8R8165
G-8R8166
A-2
B - 8R9204
P-8R7199
D-6
B-8R9204
Service Mode Plug
D-5
R - 8R9203
S-8R8117
F-7
B-8R9204
Front Wiper Motor
E-3
9 Contacts
F-8R8164
G - 8R8166
F-2
E-8R8165
GG - 6W8227
B-2
A- 8R81 59
C-8r8163
A-11
G-8R8166
Rear Wiper Motor
E-6
A-8R8159
H-8R8185
D-12
B - 8R9204
Q-8R6083
C-4
B - 8R9204
R-8R9203
D-8
T-8R6082
Radio
E6
Vehicle locations are repeated for connectors located close together.
* = Connector is located at component.
7 Contacts
5 Contacts
4 Contacts
10 Contacts
8 Contacts
40 Contacts
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
2M9346 Stoplamp Pressure
45 kPa MAX
(6.5 psi MAX)
5 kPa MIN
(0.5 psi MIN)
N.O.
7T0988 Engine Oil Pressure (CMS)
62 ± 21 kPa
(9.0 ± 3.0 psi)
38 ± 21 kPa
(5.0 ± 3.0 psi)
N.O.
8N1693 Engine Coolant Temperature (Ether Aid)
37.8 ± 2.8°C
(100 ± 5°F)
26.7°C MIN
(80°F MIN)
N.C.
8N2248 Hydraulic Oil Temperature (CMS)
101.7 ± 2.8°C
(215 ± 5°F)
93.3°C MIN
(200°F MIN)
N.C.
8T9792 Secondary Brake Air Pressure
517 ± 35kPa
(75 ± 5 psi)
448 ± 35kPa
(65 ± 5 psi)
*
9X1159 Steering (Primary-Secondary) Flow (CMS)
4 grams
(.14 oz.)
1.5 grams
(.05 oz)
N.O.
9X3210 Parking Brake Pressure (CMS)
517 ± 35kPa
(75.0 ± 5.0 psi)
448 ± 35kPa
(65.0 ± 5.0 psi)
N.O.
* = Pins 1-2 N.O.; Pins 1-3 N.C.
N.O. = NORMALLY OPEN
N.C. = NORMALLY CLOSED
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Monitoring Circuits (Continued)
101 RD BATTERY 419 YL OPR MON PARKING BRAKE
102 BU HEAD LAMP 429 YL OPR MON BRAKE OIL TEMP
105 BR KEY SW 432 PK OPR MON BRAKE PRESS. (OIL)
107 WH ENG SHUT-DOWN/AUTO FIRE SUPPR CONT 433 BU OPR MON BRAKE PRESS. (OIL) JUMPER
109 OR ALTERNATOR OUTPUT (+)TERM. 440 BR AIR PRESS. GAGE
112 PU MAIN POWER RELAY OUTPUT 441 OR ENG COOLANT TEMP GAGE
113 OR OPR MON PANEL/VMIS B+ SWITCHED 442 GY HYD SYSTEM TEMP GAGE
114 GN WARNING HORN (FORWARD) 443 YL POWER TRAIN TEMP GAGE
116 BR AUX CKT 447 PK FUEL LEVEL GAGE
118 GY AUX CKT 450 YL TACH SENDER (+)
120 YL AUX CKT 496 WH OPR MON PANEL HYD OIL LEVEL
121 YL BACKUP ALARM/LAMP A401 YL ELECTRICAL SYSTEM VOLTAGE
124 GN A/C A475
127 OR AUX CKT
Accessory Circuits
128 PK AUX CKT 500 BR WIPER - FRONT (PARK)
129 BU AUX CKT 501 GN WIPER - FRONT (LO)
130 GN AUX CKT 502 OR WIPER - FRONT (HI)
158 BR AUX CKT 503 BR WIPER - REAR (PARK)
177 OR MAIN BKR 504 YL WIPER - REAR (LO)
193 PU AUX CKT 505 BU WIPER - REAR (HI)
Ground Circuits
506 PU WASHER - FRONT
200 BK MAIN CHASSIS 507 WH WASHER - REAR
201 BK OPR MON PANEL/VMIS/CMS 508 PU RADIO SPEAKER - LEFT
203 BK CHASSIS DIAGNOSTIC 509 WH RADIO SPEAKER - LEFT (COMMON)
207 BK STARTER DIAGNOSTIC 511 BR RADIO SPEAKER - RIGHT
270 BK CMS IDENT CODE 0 512 GN RADIO SPEAKER - RIGHT (COMMON)
271 BK CMS IDENT CODE 1 513 OR A/C COMPRESSOR/REFRIGERANT PRESS. SW
272 BK CMS IDENT CODE 2 514 PU A/C CONDENSER MOTOR
273 BK CMS IDENT CODE 3 515 GY BLOWER MOTOR (HI)
274 BK CMS IDENT CODE 4 516 GN BLOWER MOTOR (MEDIUM)
275 BK CMS IDENT CODE 5 517 BU BLOWER MOTOR (LO)
290 BK CMS TACH/SPDOM IDENT CODE 0 521 YL A/C SW TO REFRIGERANT SW
291 BK CMS TACH/SPDOM IDENT CODE 1 522 WH A/C CLUTCH TO THERMOSTAT SW
292 BK CMS TACH/SPDOM IDENT CODE 2 537 GN TURN SIGNAL SW TO FLASHER
Basic Machine Circuits
538 BR HAZARD INDICATOR
301 BU STARTER NO.1 SOL 592 BU DC/DC CONVERTER POWER OUTPUT
302 OR STARTER NO.1 RESISTOR TO DIAGNOSTIC
Lighting Circuits
304 WH STARTER RELAY NO.1 OUTPUT 603 PK ROTARY BEACON
306 GN
STARTER RELAY COIL TO NEUT START SW OR
KEY SW
604 OR STOP LAMP
308 YL MAIN POWER RELAY COIL 605 YL TURN LAMP - LEFT
310 PU START AID SW TO START AID SOL 606 GY TURN LAMP - RIGHT
311 WH START AID SOL TO TEMP SW 608 GN FLOOD LAMP - REAR
321 BR BACKUP ALARM/LAMP/TRAVEL ALARM 610 OR HEAD LAMP BASIC
322 GY WARNING HORN (FORWARD) 611 PU HEAD LAMP HI
326 PU KEY SW "C" TERM. 614 PU PARK/TAIL/DASH LAMP
327 PK SHUTDOWN SOL 615 YL CAB FLOOD LAMP/ROPS
Monitoring Circuits
617 BR TAIL/POSITION LAMP - LEFT (ROAD PKG)/WIDTH
403 GN ALTERNATOR (R) TERM. 619 GN HEAD LAMP LO
405 GY OPR MON OIL PRESS. (LO SETTING)
Control Circuits
409 OR OPR MON NEUT 710 GN XMSN SPEED PICKUP SIGNAL
410 WH OPR MON FAULT ALARM 761 GY LIFT KICKOUT SOL SW
411 PK OPR MON MASTER FAULT LAMP 762 YL BUCKET POSITIONER SOL SW
416 OR SUPPL STER SW 944 OR CMS COMM+
417 GY PRIMARY STER SW 945 BR CMS COMM -
976 OR RIDE CONT SOL
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
34
32
37
35
33
31
36
38
7
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
24
22
23
21
25
26
27
28
29
30
31
32
37
35
33
34
36
38
7
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3 4
6
7
8
9
10
11
12
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.
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
*
*
*
*
*
*
1
2
1
3
4
4
5
6
5
7
8
9
10
8
6
11
5
5
12
5
8
8
8
HARNESS CONNECTOR AND COMPONENT LOCATIONS
C32238P1
5
201-BK-18
P
T
L32
L31
L30
L31
L33
L31
L33
L30
HH
128-PK 2
L34
L34
L30
L31
L32L32
L35
L33
L30
A
L34
L32
L35
L35
L35
L21
L34
L32
128-PK
128-PK
L36
L36L36
L37
L37 L37
L37
L38
L38 L38
L36
L36
L38
L9
2
1
2
3
1
L1
L40
L40
L40
L40
NOTE C: BUCKET MARKER LAMPS ARE DEALER INSTALLED
00
00
E-11008R2649HH
200-BK
L5
SS
SS
G
G
RD-18
BK-18
BK-18
RD-18
G
G
Z
L11
L28
ATT
L29
L28
L16
200-BK
L28
L28
201-BK-18
507-WH
506-PU
507-WH
AA
FRONT
WASHER
7T8891
REAR
WASHER
7T8891
506-PU
MOTOR
SECONDARY BRAKE
AIR PRESS SW
8T9792
WIRE AS
4E4276
NOTE B
L8
L9
403-GN
L10
L13
403-GN
201-BK-18
201-BK-18
201-BK-14
201-BK-18
A
FA
200-BK
614-PU
614-PU
L11
EA
L14
L26
L25L25
L26
L13
P
L22
L10
L10
L8
201-BK-14
L36
614-PU
L7
201-BK-18
201-BK-18
1
2
201-BK-14
201-BK-14
201-BK-14
RD-18
RD-18
RD-18
RD-18
RD-18
RD-18
L23
114-GN
L4
L6
L5
603-PK2
1
L11
L14
JJ
G
G
1
2
3
4
5
761-GY
128-PK
200-BK
762-YL
976-OR
200-BK
128-PK
762-YL
200-BK
200-BK
762-YL
128-PK
LIFT POS SW
8C5434
BUCKET POS SW
8C5435
1
2
3
GROUND
SOLENOID
+ BATTERY
BK-18
BU-18
OR-18
BU-18
BK-18
OR-18
+ BATTERY
SOLENOID
GROUND
3
2
1
976-OR
200-BK
1
2
3
200-BK
976-OR
2
1
RIDE CONT
SOL
6T8046
2
1
129-BU
200-BK-14
193-PU
L
L
L
603-PK
605-YL-14
606-GY-14
L
L
L
L
L
L
L
L
200-BK-14
200-BK
200-BK
200-BK
200-BK-14 200-BK-14
00
00
00
01
01
00
02
00
01
00
02
00
00
01
01
00
01
00
01
01
01
01
01
02
03
B-2
F-2
B-1
200-BK-14
617-BR-14
617-BR-14
200-BK-14
RD-18
BK-18
BK-18
TO TURN SIGNAL
SW, TERM 2
TO TURN SIGNAL
SW, TERM 3
TO TURN SIGNAL
SW, TERM 1
537-GN-14
605-YL-14
606-GY-14
200-BK-14
606-GY-14
200-BK-14
605-YL-14
D-2
102-BU-14 1
3
4
614-PU-14
2
B-1
5
FUEL LEVEL BUFFER
9X3252
GERMAN ROADING VERSION
E
417-GY-18
416-OR-18
L36
L25
L26
L39
L39
L10
1
3
2
XX
G
L39
L39
1
2
2
1
201-BK-18
201-BK-18
201-BK-18
WW
NON-GERMAN ROADING VERSION
201-BK-18
W
PRIMARY
STEERING SW
9X1159
417-GY-18
201-BK-18
416-OR-18
201-BK-18
417-GY-18
W
NOTE: REPLACES
HARNESS W ON
VEHICLES NOT
EQUIPPED WITH
SUPPL STRG
416-OR-18
201-BK-18
201-BK-18
201-BK-18
496-WH-18
201-BK-18
201-BK-18
201-BK-18
HYDRAULIC
OIL LEVEL SW
7T8530
1
417-GY-18
2
417-GY-18
976-OR
200-BK
416-OR-18
417-GY-18
416-OR-18
G
6
5
8
EE
EE
AA
DD
CC
BB
AA
L29L29
V A
2
1 120-YL
200-BK
L16
8R8161
R
L4
E
E-1 ATT
8R8139
STD
8R8167
8R8169
8R9599
G
SS
CHG
A-108R8160V
F-11
F-11
F-11
F-11
5V3885 02
7P6682 01
3S8624 01
5V3887 02
8V0615 01
B-4
D-5
B-2 ATT
STD
8R8171
JJ
BB
B
B
6
BRAKE AIR
DRYER
8V9101
F-8
200-BK-14
322-GY
8R9526 00
4E4276 00
7
200-BK-14
614-PU-14
F F
538-BR-14
606-GY-14
605-YL-14
F
L12
RIDE
CONTROL SW
6T3990
BEACON SW
6T3990
976-OR
B-28R8170
C-48R8168
F-68R6082
E-78R8117
D-88R9203
C-48R6083
D-68R7199
A-68R9297
B-58R9296
C-38R7067
KA
L23
D-9
8R8185
L23
L27
L27 L27
A-2
L21 L21
L21
L21
8R8166
D-12
F-12
F-28R8186
F-28R8164
L14
L14
A-68R8165
L14
F-108R8162
BA
BA
BA
L15
A-11
L15
L15
L16
L17
8R8163
B-88R9204
B-8
A
L8
L9
D
L10
L13
L12
A
L17
8R8159
A
F
L26
112-PU-4
L26
L25
112-PU-14
L25
112-PU-14
112-PU-14
C
112-PU-14
C
112-PU-14
112-PU-14
B
112-PU-14
B
112-PU-14
P
112-PU-14
P
Q
7
EA
B
Q
R
L11L11
Q
Q
Z
L2
Q
B
B
M
M
N
N
N
EEE
T
BACKUP
ALARM SW
9N1750
PRIMARY
STEERING SW
9X1159
SUPPLEMENTAL STEERING SW
9X1159
L2
T
L24L24
L7
L7
L7
G
G JJ
E
E
G
E
E
B L
B L
FFF
F
F
L22
L8
B
B L
ZF
L23
C
F
L4
RD-18
RD-18
1
2
200-BK-14
LEFT TURN
LAMP
7X6066
605-YL-14
L6
606-GY-14
RIGHT TURN
LAMP
7X6066
200-BK-14
2
BK-18
RD-18
1
FORWARD HORN
7T0970
L5
A
614-PU-14
619-GN-14
200-BK-14
200-BK-14
LOW BEAM
HEAD LAMP
9X1441
NOTE C
LOW BEAM
HEAD LAMP
9X1441
200-BK-14
619-GN-14
SR
BK-18
L6
605-YL-14
611-PU-14
606-GY-14
617-BR-14
614-PU-14
200-BK-14
200-BK-14
322-GY
BK-18
MM 8R9526
F
4
322-GY
BK-18
5
114-GN
BK-18
6
8
1
3
9
2
GN-14
7
STD
NOTE B: SECONDARY BRAKE AIR PRESS SW REPLACES JUMPER WIRE
JUMPER PLUG
8R2649
2
1
3200-BK-14
615-YL
603-PK
128-PK
201-BK-18
ENGINE
SHUTDOWN
SOLENOID
6T4122
200-BK
327-PK
200-BK-14
128-PK
6
200-BK-14
200-BK-14
200-BK-14
201-BK-18
429-YL-18
1
3
200-BK
5
200-BK
TO FRAME
321-BR
2
10
9
8
10
9
GERMAN ROADING ATTACHMENT
429-YL-18
HORN SW
7T2296
203-BK
101-RD-4
304-WH-8
109-OR-4
304-WH-8
101-RD-4
H
10
9
121-YL
121-YL
114-GN
130-GN
200-BK-14
101-RD
114-GNFORWARD HORN10A
A401-YL-18
619-GN-14
105-BR
308-YL
306-GN
310-PU
112-PU-4
32
310-PU
120-YL
200-BK-14
327-PK
311-WH
310-PU
310-PU
2
1
200-BK
120-YL
113-OR-18
201-BK-18
107-WH-14
107-WH-14
15
101-RD-14
327-PK
200-BK-14
200-BK
200-BK
506-PU
200-BK
200-BK
D
326-PU
327-PK
200-BK-14
107-WH-14
306-GN
306-GN
ENGINE SHUTDOWN CONTROL
9G9287
311-WH
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
L1
201-BK-18
432-PK-18
403-GN-18
441-OR-18
429-YL-18
120-YL
326-PU
416-OR-18
417-GY-18
608-GN
615-YL
603-PK
432-PK-18
102-BU-14
617-BR-14
614-PU-14
606-GY-14
605-YL-14
611-PU-14
619-GN-14
610-OR-14
419-YL-18
447-PK-18
440-BR-18
538-BR-14
306-GN
112-PU-4
A401-YL-18
308-YL
105-BR
102-BU-14
310-PU
617-BR-14
614-PU-14
605-YL-14
606-GY-14
DIMMER SW
2H1855
762-YL
128-PK
200-BK 3
2
1
B
200-BK-14
200-BK-14
432-PK-18
Z
200-BK-14
606-GY-14
605-YL-14
538-BR-14
610-OR-14
617-BR-14
614-PU-14
619-GN-14
611-PU-14
102-BU-14
606-GY-14
605-YL-14
CAB
FLOOD
LAMP
9X4381
CAB
FLOOD
LAMP
9X4381
419-YL-18
440-BR-18
130-GN
604-OR
113-OR-18
201-BK-18
447-PK-18
114-GN
322-GY
F
200-BK-14
606-GY-14
605-YL-14
538-BR-14
102-BU-14
619-GN-14
322-GY
611-PU-14
322-GY
619-GN-14
2
7
2
610-OR-14
9
610-OR-14
3
1
8
200-BK
128-PK
976-OR
2
4
1
2
5
3
114-GN
432-PK-18
538-BR-14
440-BR-18
447-PK-18
113-OR-18
201-BK-18
419-YL-18
102-BU-14
610-OR-14
619-GN-14
611-PU-14
614-PU-14
617-BR-14
606-GY-14
605-YL-14
200-BK-14
200-BK-14
CIGAR
LIGHTER
9W0335
200-BK
592-BU
R
604-OR
130-GN
7
6
5
4
3
1
8
7
5
4
3
1
6
2
201-BK-18
200-BK-14
201-BK-18
200-BK-14
403-GN
403-GN
403-GN
522-WH-14
L12
118-GY
118-GY
502-OR
411-PK-18
118-GY
118-GY
615-YL
200-BK-14
118-GY
615-YL
611-PU-14
976-OR
538-BR-14
411-PK-18
200-BK-14
614-PU-14
614-PU-14
200-BK-14
614-PU
603-PK
500-BR
501-GN
611-PU-14
538-BR-14
976-OR
606-GY-14
605-YL-14
193-PU
129-BU
200-BK
200-BK-14
118-GY
118-GY
118-GY
504-YL
505-BU
503-BR
118-GY
120-YL
105-BR
503-BR
124-GN-14
158-BR-14
120-YL
113-OR-18
128-PK
112-PU-4
158-BR-14
124-GN-14
113-OR-18
128-PK
193-PU
129-BU
118-GY
116-BR
127-OR
120-YL
120-YL
105-BR
102-BU-14
614-PU-14
102-BU-14
976-OR
128-PK
603-PK
611-PU-14
606-GY-14
605-YL-14
538-BR-14
120-YL
120-YL
2
3
112-PU-4
440-BR-18
419-YL-18
113-OR-18
417-GY-18
710-GN-18
113-OR-18
442-GY-18
416-OR-18
432-PK-18
496-WH-18
429-YL-18
A401-YL-18
447-PK-18
409-OR-18
A475-PU-18
443-YL-18
405-GY-18
441-OR-18
450-YL-18
1
2
105-BR
3
1
306-GN
326-PU
200-BK
120-YL
105-BR
503-BR
118-GY
102-BU-14
505-BU
504-YL
BK
308-YL
BU
RD
201-BK-18
7
6
4
8
RADIO
8C9838
GN
GY
BR
OR
4
2
3
1
H
L
MOTOR
-T
5
102-BU
200-BK
105-BR
DOME LAMP
8C9678
3
2
1
BK
614-PU
200-BK-14
YL
WH
614-PU
200-BK-14
403-GN-14
10
3
4
2
3
2
1 200-BK-14
614-PU
200-BK
200-BK
105-BR
608-GN
127-OR
200-BK
615-YL
608-GN
617-BR-14
614-PU-14
610-OR-14
102-BU-14
619-GN-14
116-BR
127-OR
4
8
5
9
7
6
10
1
2
3
1
2
5
3
4
8
7
512-GN
511-BR
508-PU
509-WH
200-BK
2
505-BU
1
4
RIGHT
SPEAKER
6T7695
LEFT
SPEAKER
6T7695
509-WH
5
3
6
MEMORY
ANTENNA
LEFT SPKR -
RIGHT SPKR -
GROUND
PK
BK
PU
BU
RD
GY
GN
RIGHT SPKR +
LEFT SPKR +
+ BATTERY
113-OR-18
201-BK-18
YL-18
BK-18
OR-18
SIGNAL
+V
GROUND
C
B
A
4
403-GN-18
200-BK-14
207-BK
302-OR
RESISTOR
6T2217
403-GN-18
5
3
6
8
611-PU-14
2
SERV
MODE
PLUG
COMM
LINK
419-YL-18
U.S./
METRIC
UNITS
PLUG
1
945-BR-18
944-OR-18
4
292-BK-18
7
290-BK-18
291-BK-18
201-BK-18
201-BK-18
270-BK-18
271-BK-18
272-BK-18
7
273-BK-18
1
274-BK-18
7
1
2
NOTE C
1
2
101-RD-18
710-GN-18
409-OR-18
1
2
A401-YL-18
RESISTOR
6T2217
5
508-PU
503-BR
102-BU-14
A401-YL-18
2
1
ENGINE
OIL SW
7T0988
SYS VOLTAGE
522-WH-14
405-GY-18
201-BK-18
105-BR
617-BR-14
E-10002W8715PP
E-10002W8662PP
F-11005R7755NN
BB
A
D
8R9295 00
A
A
8R7202 00
NN
B-1
6W8227
W
A
200-BK-14
H
NON-GERMAN ROADING
TURN SIGNAL
SYSTEM
H
H
WH
CABLE AS.
4E1286 00
966F WHEEL LOADER (7T3830 CHG 00) STARTED 3 JUN 89
X
MM
LL
JJ
W
U
TO HARNESS F (LOC D-2)
GG
EE
DD
CC
BB
AA
T
WIRE AS.
S
R
Q
P
N
M
L
K
J
H
G
F
E
D
C
B
A
HARNESS AS.
LOCPART NO.
KK
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
AND XMSN SHIFTER IN NEUTRAL
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAGE
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
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
BK
513-OR-14
522-WH-14
A/C CLUTCH
SOLENOID
8T8813
513-OR-14
D
200-BK-14
976-OR
2
5
4
6
3
2
1
F
E
D
2
1 11
0
1
C
B
A
HIGH BEAM
INDICATOR LAMP
7N5876
2
1 11
0
1
321-BR
121-YL
496-WH-18
442-GY-18
201-BK-18
113-OR-18
976-OR
128-PK
200-BK
447-PK-18
440-BR-18
538-BR-14
522-WH-14
513-OR-14
326-PU
443-YL-18
4
3
RIDE CONTROL
INDICATOR LAMP
7N5876
7
2
1
9
8 7
4
HAZARD FLASHER
INDICATOR LAMP
7N5876
9
8
7
6
5 4
L11
6 5
4
3 2
1
F
E
D
3 2
1
C
B
A
L
2
504-YL
505-BU
506-PU
507-WH
BK-18
BK-18
BK-18
BK-18
FRONT
WIPER SW
3T6655
BRAKE OIL SWITCHES
7V5647
TO
ENGINE
TO
FRAME
BK-4
2
NEG POS
18
20
19
17
16
15
14
5
128-PK
GN
GN
1
9
5
109-OR-4
2
RELAY PANEL
15A
80A
6
109-OR-4
450-YL-18
GG
10A
405-GY-18
H
200-BK-14
H
105-BR
4
3
7
2
11
10
6
8
12
9
1
13
DIAGNOSTIC CONNECTOR
308-YL
112-PU
109-OR
101-RD
105-BR
RELAY PANEL
177-OR-8
1
2
304-WH
306-GN
200-BK-14
200-BK-14
MAIN
BREAKER
9S4693
177-OR-4
BUS BAR
7V9275
118-GY
ALTERNATOR
BREAKER
9S4693
80A
504-YL
112-PU-4
VOLTAGE
CONVERTER
7T8000
BK
WH
L2
BK-18
3
BK-18
615-YL
608-GN
603-PK
617-BR-14
442-GY-18
522-WH-14
416-OR-18
102-BU-14
201-BK-18
976-OR
310-PU
4
200-BK
200-BK-14
200-BK-14
STARTER
4N3181
12V BATTERY
9G4247
MAIN
RELAY
3T0376
619-GN-14
432-PK-18
450-YL-18
BK-18
RD-18
9X1404 (ECE)
BK-18
RD-18
496-WH-18
3
441-OR-18
112-PU-4
201-BK-18
6
302-OR
207-BK
301-BU
5
1
DISCONNECT SW
7N0718
BK-00
2
1
113-OR-18
311-WH
405-GY-18
120-YL
9X1406 (ECE)
LEFT TURN LAMP
7X6066 (USA)
9X1404 (ECE)
RD-00
RD-00
BK-00
BK-00
BK-00
441-OR-18
200-BK
G S
MTR BAT
MOTOR
RD-00
BK-00
BK-00
441-OR-18
311-WH
113-OR-18
7
12V BATTERY
9G4247
604-OR
321-BR
614-PU-14
606-GY-14
605-YL-14
617-BR-14
608-GN
200-BK-14
1
405-GY-18
201-BK-18
443-YL-18
409-OR-18
443-YL-18
710-GN-18
ENGINE
GROUND
BK-6
403-GN-18
STRAP
7G1060
105-BR
PLATFORM
GROUND
128-PK
417-GY-18
308-YL
BK-18
310-PU
538-BR-14
ALT
R+
614-PU-14
203-BK
207-BK
302-OR
311-WH
310-PU
101-RD-4
109-OR-4
304-WH-8
200-BK-14
306-GN
308-YL
113-OR-18
A
B
C
GROUND
+V
SIGNAL
105-BR
OR-18
BK-18
433-BU-18
102-BU-14
A401-YL-18
310-PU
311-WH
302-OR
200-BK
120-YL
207-BK
203-BK
ALTERNATOR
5S9088 STD
8N0999 ATT
YL-18
507-WH
200-BK
200-BK
200-BK
V
V
-T
102-BU-14
447-PK-18
3
102-BU-14
SW 12
614-PU-14
BK-00
450-YL-18
A
FRAME GROUND
201-BK-18
1
118-GY
200-BK-14
201-BK-18
2
301-BU
TRANSMISSION OIL TEMPERATURE
SENSOR
9X0377
BK-00
9
443-YL-18
113-OR-18
8
201-BK-18
4
614-PU-14
201-BK-18
CMS
614-PU-14
200-BK-14
200-BK
419-YL-18
200-BK-14
7
STOP/TAIL/PARK LAMP
8C6207 (USA)
NEGPOS
5
201-BK-18
327-PK
113-OR-18
COOLANT TEMPERATURE SENSOR
9X0377
201-BK-18
441-OR-18
H
H
3
201-BK-18
200-BK-14
6
201-BK-18
201-BK-18
5
201-BK-18
5
3
A
A
A
A
A
A
1
FLASHER
8D6946
442-GY-18
113-OR-18
496-WH-18
201-BK-18
409-OR-18
321-BR
121-YL
710-GN-18
6
1
2
CAB FLOODS INDICATOR LAMP
7N5876
W
4
200-BK-14
522-WH-14
9
RIDE CONTROL SOLENOID
6T8046
201-BK-18
201-BK-18
G
ECE FRT
POSITION LAMP
9X1407
5
4
3
604-OR
130-GN
STOPLAMP SW
2M9346
2
TRANSMISSION
OUTPUT SPEED
SENSOR
9X5393
1
2
1
419-YL-18
440-BR-18
130-GN
604-OR
113-OR-18
201-BK-18
447-PK-18
200-BK-14
113-OR-18
200-BK-14
614-PU-14
105-BR
306-GN
326-PU
308-YL
310-PU
615-YL
A475-PU-18
608-GN
BK
617-BR-14
610-OR-14
619-GN-14
513-OR-14
614-PU-14
1
5
3
4
200-BK-14
CONDENSER
FAN RELAY
3T2170
PARKING
BRAKE SW
9X3210
WH/RD-14
WH/RD-14
BK-14
BK-14
2
200-BK-14
RESISTOR
9G1950
7
6
5
8
1
1
THERMOSTAT SW
9X5445
2
517-BU-14
516-GN-14
515-GY-14
521-YL-14
1
3
4
5
2
1
A
RELAY PANEL
-T
MOTOR
200-BK-14
516-GN-14
201-BK-18
6
419-YL-18
GN-18
761-GY
BK-18
128-PK
200-BK
762-YL
BLOWER
9G8694
517-BU-14
614-PU-14
976-OR
AUXILIARY
START
RECEPTACLE
9X5630
403-GN
522-WH-14
1
A
617-BR-14
7
L21
L28
201-BK-18
200-BK-14
522-WH-14
124-GN-14
311-PU
515-GY-14
2
1
515-GY-14
200-BK-14
515-GY-14
710-GN-18
158-BR-14
WH/RD/14
BK-14
193-PU
506-PU
513-OR-14
200-BK-14
521-YL-14
3
6
2
1
200-BK-14
432-PK-18
LL
158-BR-14
513-OR-14
200-BK-14
MOTOR
10
CONDENSER FAN
7X6279
8
2
3
614-PU-14
4
403-GN
158-BR-14
522-WH-14
1
614-PU-14
200-BK
6
501-GN
A
PANEL LAMPS
7N9967
T-
MOTOR
L
H
1
3
R
2
200-BK
200-BK
614-PU
1
200-BK
200-BK
615-YL
200-BK
200-BK
200-BK
200-BK
200-BK-14
410-WH-18
124-GN-14
128-PK
193-PU
129-BU
200-BK
4
OR
BR
TURN SIGNAL SW
9G5589
976-OR
101-RD
SS
HARNESS
CODE
101-RD-14
101-RD
KEY
BACKUP ALARM
STOPLAMPS
101-RD
101-RD-14
101-RD-18
101-RD-4
A
A
A
A
606-GY-14
LIFT POSITIONER SW
8C5434
C
2
113-OR-18
201-BK-18
440-BR-18
A
B
C
GROUND
+V
START RELAY
9F3099
105-BR
121-YL
3K8782 FUSE
4K5122 FUSE
HOLDER
130-GN
X
ENGINE SHUTDOWN BKR
6N8589
C
GY
GN
118-GY
D
BEACON
6T8941
4
611-PU-14
538-BR-14
605-YL-14
10A
10A
606-GY-14
200-BK
976-OR
200-BK
8
521-YL-14
7
5
411-PK-18
611-PU-14
440-BR-18
X
SIGNAL
124-GN-14
507-WH
500-BR
RD-18
BK-18
-
K
T
311-WH
502-OR
YL-18
FRONT
WIPER
6T6216
203-BK
614-PU
614-PU
429-YL-18
8
5
12
1
2
3
4
6
7
9
11
10
2
201-BK
3
1
START AID
SOLENOID
9G4365
200-BK
301-BU
6
2
2
K
BK-18
K
Z
BLOWER
9G8695
BK-14
WH/RD-14
2
C
7
1
507-WH
506-PU
505-BU
504-YL
503-BR
275-BK-18
1
2 3
502-OR
611-PU-14
605-YL-14
321-BR
121-YL
201-BK
409-OR 4
9
501-GN
OPERATOR STATION
105-BR
102-BU-14
102-BU-14
102-BU-14
8
12
11
3
START AID
SW
3T3453
2
617-BR-14
200-BK
614-PU-14
MOTOR
-+
113-OR-18
113-OR-18
113-OR-18
113-OR-18
128-PK
976-OR 128-PK
REAR WIPER
6T6216
200-BK-14
762-YL
MASTER WARNING LAMP
9W2111
1
2
3
GROUND
SOLENOID
+ BATTERY
OR-18
BK-18
BU-18
403-GN-14
500-BR
B
H
L
P W
B
605-YL-14
8
200-BK-14
RH DASH PANEL
LAMPS
7N5876
606-GY-14
102-BU-14
4 1
5
6
2
3
RH TURN INDICATOR LAMP
7N5876
-
1
+
3
610-OR-14
308-YL
310-PU
129-BU
1
U
U
U
L9
L13
UNOTE: FOR GERMAN ROADING ONLY
FLASHER
8V2514
200-BK-14
537-GN-14
538-BR-14
102-BU-14
HAZARD
TURN
30B
+ BATTERY
HEAD LAMP
49
49A
31
C2
C
614-PU
GROUND
REPLACES 8D6946 FLASHER
ENGINE SPEED
SENSOR
9X5393
ETHER AID
COOLANT SW
8N1693
1
2
2
D
D
ROTATING BEACON
KICKOUTS/RIDE CONTROL
WIPER MOTORS
326-PU
4
200-BK
761-GY
FUSE
3K8782
FUSE
HOLDER
4K5122
1
REAR FLOOD LAMPS
CIGAR LIGHTER
200-BK-14
608-GN
200-BK-14
614-PU-14
A475-PU-18
200-BK-14
604-OR
306-GN
3
606-GY-14
200-BK-14
603-PK
200-BK
442-GY-18
KK
112-PU-14
KK
496-WH-18
10A
521-YL-14
610-OR-14
321-BR
200-BK-14
10
CONDENSER FAN MTRS
BLOWER MOTORS
10A
10A
2
10A
KK
512-GN
511-BR
592-BU
120-YL
200-BK
10A
10A
10A
127-OR
116-BR
G
CONVERTER/AIR DRYER
7
15A
124-GN-14
158-BR-14
OR
PANEL LAMPS
7N5876
GRN
BLU
YL-18
BK-18
B
BK-18
RD-18
SIGNAL
+V
GROUND
3
2
1
FRT CAB FLOOD LAMPS
BLK
WH-18
BUCKET POSITIONER SW
8C5435
R
R
R
521-YL-14521-YL-14
15A
NC
NC
NC
SW 2
608-GN
G BK-18
WH-18
RD-18
T
S
2
3
1RD-18
PP
D
FLOOD LAMP
9X1439
1
3
2
605-YL-14
112-PU-4
BRAKE AIR PRESSURE SENSOR
9X5272
RED
CIRCUIT
BREAKERS
6N8589
409-OR-18
200-BK-14
FAULT
ALARM
9G9813
KEY SW
9G7641
105-BR
105-BR
326-PU
308-YL
310-PU
SERVICE
METER
6T7337
200-BK-14
617-BR-14
2
S
T
604-OR
608-GN
BK-18
615-YL
2
1RD
BK
200-BK-14
513-OR-14
201-BK
513-OR-14
S
514-PU-14
514-PU-14
6
FLOOD LAMP
9X1439
BK-18
STOP/TAIL/PARK LAMP
8C6207 (USA)
201-BK-18
102-BU-14
450-YL-18
201-BK-18
Z
200-BK
MOTOR
MOTOR
292-BK-18
291-BK-18
290-BK-18
US/METRIC UNITS
CLEAR
SERVICE
417-GY-18
RUNNING LAMP BKR
3T2662
118-GY
LH TURN INDICATOR LAMP
7N5876
200-BK-14
306-GN
RIGHT TURN LAMP
7X6066 (USA)
S
S
S
REAR
WIPER SW
3T6655
118-GY
REFRIGERANT SW
NOTE A
9W0549
416-OR-18
B
419-YL-18
405-GY-18
432-PK-18
ST
ON
OFF
B
S
C
R
WP
L
H
B
OPERATOR STATION
447-PK-18
441-OR-18
443-YL-18
442-GY-18
710-GN-18
270-BK-18
271-BK-18
614-PU
272-BK-18
Z
273-BK-18
274-BK-18
275-BK-18
945-BR-18
113-OR-18
XMSN RPM
411-PK-18
36
12
24
29
37
38
11
28
27
26
25
19
20
5
10
410-WH-18
1
4
3
23
30
31
BR AIR PRESS
40
35
13
8
34
32
PARK BRAKE
PRIM STEER
SCND STEER
ALTERNATOR
HARNESS CODE 1
HARNESS CODE 2
HARNESS CODE 3
HARNESS CODE 4
HARNESS CODE 5
39
A475-PU-18
+ BATTERY
LAMP
ALARM
201-BK-18
ENG OIL PRESS
BR OIL PRESS
COOL TEMP
NEUTRAL
FUEL LEVEL
SW 9
CNVT TEMP
HYD TEMP
HARNESS CODE 0
COMM -
RD-18
BK-18
COMM +
GROUND
2
450-YL-18
403-GN
ENG RPM
SEC BRK PRESS
BRK OIL TEMP
1
HYDRAULIC
TEMP SENSOR
9X0377
2
OR-18
BK-18
105-BR
614-PU-14
603-PK
615-YL
200-BK
447-PK-18
201-BK-18
LIFT
K.O.
8C9634
603-PK
1
2
3
+ BATTERY
GROUND
SOLENOID
BK-18
OR-18
BU-18
128-PK
762-YL
128-PK
761-GY
200-BK
4
NC 6
2
615-YL
409-OR-18
710-GN-18
FF
S
L13
113-OR-18
12
9
6
3
200-BK
11
8
5
2
614-PU-14
617-BR-14
9
KK
606-GY-14
36
3
12
2
1
2
1
944-OR-18
15
16
18
17
COMPUTERIZED
MONITORING
SYSTEM
7X1360
+ BATTERY
24
29
GROUND
308-YL
+12 VOLT
GROUND
37
38
11
28
27
26
25
3
20
5
22
10
1
4
19
23
2
30
31
33
40
35
7
8
34
2
619-GN-14
13
39
9
16
15
18
17
6
200-BK
10A
22
BUCKET
K.O.
8C9635
615-YL
200-BK
201-BK-18
113-OR-18
442-GY-18 YL-18
BK-18
OR-18
SIGNAL
+V
GROUND
C
B
A
1
496-WH-18
BLOWER SW
6P3236
L10
605-YL-14
GN-18
GY-18
BUCKET
FLOAT
8C9635
SENDER
GROUND
21
1
21
116-BR
FLOOD
LAMP SW
9X1423
RUNNING
LAMP SW
6T3989
440-BR-18
33
201-BK-18
429-YL-18
14
32
S
S
9X1406 (ECE)
COM
14
7
COM
XMSN
NEUTRAL SW
9N1750
HYD LEVEL
201-BK-18
A475-PU-18
5
3
1
200-BK
200-BK
200-BK
200-BK
NO NC
NO
NC
CONDENSER FAN
7X6279
BACKUP ALARM
3T1815
1
128-PK
2
200-BK
611-PU-14
200-BK-14
2
1
1
2
619-GN-14
200-BK-14
619-GN-14
HIGH BEAM
HEAD LAMP
9X1440
200-BK-14
200-BK-14
FUEL LEVEL SENDER
9X4941
KK
LEFT TURN
LAMP
7X6066
200-BK-14
605-YL-14
HIGH BEAM
HEAD LAMP
9X1440
G
606-GY-14
OPERATOR STATION
ECE FRT
POSITION LAMP
9X1407
2
1
200-BK-14
FLOOD LAMP
9X1439
FLOOD LAMP
9X1439
611-PU-14
619-GN-14
200-BK-14
RIGHT TURN
LAMP
7X6066
D32531
7N9737
7N9738
