©
1986 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR3417
June 1986
D8N Tractor
Electrical System
9TC1-UP
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Accessory Circuits (Continued)
101
BATTERY
400 GN SERVICEMETER SWITCH
102 HEAD LAMP 403 GN ALTERNATOR (R) TERMINAL
103 DOME/DASH LAMP/PARK, TAIL LAMP 404 YL OPERATOR MON PANEL HYDRAULIC OIL TEMP
105
BR
KEY SWITCH 405 GY OPERATOR MON PANEL OIL PRESS
106 WH MAIN POWER RELAY/INPUT 406 PU OPERATOR MON PANEL COOLANT TEMP
107 WH ENGINE SHUT DOWN 407 PK OPERATOR MON PANEL CONV/RETARDER OIL TEMP
108 MISC WIPER, DOME LAMP, CIGAR LIGHTER 408 WH OPERATOR MON PANEL BRAKE PRESS (AIR)
109 OR ALTERNATOR 409 OR OPERATOR MON PANEL NEUTRAL
110 GN WINDSHIELD WIPER SW (RIGHT) 410 WH OPERATOR MON PANEL FAULT ALARM
111 YL WINDSHIELD WIPER SW (LEFT) 411 PK OPERATOR MON PANEL MASTER FAULT LAMP
112 PU MAIN POWER RELAY/OUTPUT 412 BU OPERATOR MON PANEL COOLANT FLOW
113 OR OPERATOR MONITOR PANEL 413 BR OPERATOR MON PANEL FUEL PRESS
114 WARNING HORN (FORWARD) 414 PK OPERATOR MON PANEL LOW FUEL
115 FLOOD LAMP (FRONT) 415 GN OPERATOR MON PANEL TEST SW
116 FLOOD LAMP (REAR) 416 OR SECONDARY STEERING SW,
117 FLOOD LAMP (SIDE) 417 GY PRIMARY STEERING SW
118 GY WINDSHIELD WIPER SW (FRONT) 418 YL OPERATOR MON PANEL OIL PRESS (HIGH SETTING)
119 PK WINDSHIELD WIPER SW (REAR) 419 YL OPERATOR MON PANEL PARKING BRAKE
120 CONVERTER (24 V to 12 V) 420 OR OPERATOR MON PANEL FUEL FILTER/LOW
121 YL BACKUP ALARM/LAMP/TRAVEL ALARM TIMER ACCUM PRESS
122 BU AIR DRYER 421 BU OPERATOR MON PANEL FAULT LAMP (SCRAPER)
123 GAUGES (SERVICEMETER, TORQUE CONV 422 YL OPERATOR MON WARNING HORN (SCRAPER)
SOLENOID) 423 GY OPERATOR MON PANEL TEST SW (SCRAPER)
124 GN AIR CONDITIONER 424 GY OPERATOR MON PANEL POWER TRAIN TEMP
125 OR FUEL TRANSFER PUMP 425 PK OPERATOR MON PANEL POWER TRAIN OIL LEVEL
126 PK TRANSMISSION CONTROL 426 BR OPERATOR MON PANEL POWER TRAIN OIL FILTER
127 OR CAB FLOOD LAMP 427 GN OPERATOR MON PANEL POWER TRAIN OIL
128 PK KICKOUT SOLENOID SW FILTER JUMPER
129 BU CIGAR LIGHTER 428 OR OPERATOR MON PANEL TRANSMISSION OIL TEM
P
130 GN STOP LAMP 429 YL OPERATOR MON PANEL BRAKE OIL TEMP
131 BR FIRE CONTROL-OPERATOR WARNING 431 GN OPERATOR MON PANEL LOW TRANSFER
132 PK ANTISPIN CONTROL PUMP PRESS
133 OR PROGRAMMED ELECTRONIC ENG CONT SOLENOID 432 PK OPERATOR MON PANEL BRAKE PRESS (OIL)
134 PK PROGRAMMED ELECTRONIC ENG CONT LOGIC 433 BU OPERATOR MON PANEL BRAKE PRESS (OIL ) JUMPER
135 BU AM/FM RADIO 434 BU OPERATOR MON PANEL POWER TRAIN TEMP JUMPER
136 GN SUPPLEMENTAL STEERING 435 YL OPERATOR MON PANEL POWER TRAIN TEMP JUMPER
137 RD STEERINGMOTOR INDICATOR 436 OR OPERATOR MON PANEL POWER TRAIN OIL
138 GN AUTOMATIC LUBE PUMP (TRUCK) FILTER JUMPER
141 PK AUXILIARY HEATER 437 BR OPERATOR MON PANEL FUEL LEVEL TO FUEL
146 GY ACCESSORY SWITCH 1 FILTER JUMPER
147 PU ACCESSORY SWITCH 2 438 YL OPERATOR MON PANEL COOLANT TEMP JUMPER
148 WH A/C SWITCH 440 BR AIR PRESS GAUGE
153 WH 3 PT HITCH CONTROL 441 OR ENGINE COOLANT TEMP GAUGE
154 WH AIR CONDITIONER 442 GY HYDRAULIC SYSTEM TEMP GAUGE
172 GN HAZARD FUSE TO FLASHER 443 YL POWER TRAIN TEMP GAUGE
174 PK CUSTOMER ADD-ONS 444 BU CONV/RETARDER OIL TEMP GAUGE (TRACTOR)
175 PK TRAILER TURN/HAZARD 445 GN CONV/RETARDER OIL TEMP GAUGE (SCRAPER)
176 YL CUSTOMER ADD-ONS 446 PU BRAKE OIL TEMPERATURE GAUGE
176 OR CRANKCASE GUARD - PUMP MOTOR 447 PK FUEL LEVEL GAUGE
177 OR MAIN BREAKER 449 BU SPEEDOMETER SENDER (SIGNAL)
178 GN MAIN BREAKER 450 YL TACHOMETER SENDER (+)
GROUND CIRCUITS 451 TACHOMETER SENDER (-)
200 MAIN CHASSIS 452 PU TORQUE CONVERTER
201 BK OPERATOR MONITOR PANEL 453 PK SECONDARY STEERING FAULT LAMP
202 BK TRANSMISSION CONTROL 454 GN RETARDER INDICATOR LAMP
203 BK CHASSIS DIAGNOSTIC 455 YL CONVERTER TEMP SW TO TIME DELAY
204 BK OPERATOR MONITOR PANEL (SCRAPER) 456 BR MONITOR PANEL PTO
205 BK INSTRUMENT 457 PU MONITOR PANEL GROUND SPEED SENDER
206 BK BATTERY SIDE OF DISCONNECT 458 PK MONITOR PANEL +V
207 BK STARTER DIAGNOSITC 459 PK MONITOR PANEL IMPLEMENT POSITION
209 BK FIRE SUPPRESSION SYSTEM 460 BU MONITOR PANEL PROGRAM PIN
212 BK ANTISPIN CODING PIN 16 463 YL SENSOR PRESENT
213 BK ANTISPIN CODING PIN 17 464 GY MONITOR PANEL ENGINE OIL PRESSURE SENSOR
214 BK ANTISPIN CODING PIN 18 466 WH MONITOR PANEL STEERING OIL TEMPERATURE
215 BK ANTISPIN CODING PIN 19 469 GN FUEL LEVEL SENDER +V
216 BK ANTISPIN CODING PIN 20 470 PU CANE SW NEUTRAL
217 BK TRANSMISSION CODING PIN 17 ACCESSORY CIRCUITS
218 BK TRANSMISSION CODING PIN 18 500 BR WINDSHIELD WIPER - FRONT (PARK)
219 BK TRANSMISSION CODING PIN 19 501 GN WINDSHIELD WIPER - FRONT (LOW)
220 BK ENGINE OIL PRESSURE SENSOR 502 OR WINDSHIELD WIPER - FRONT (HIGH)
221 BK ENGINE COOLANT TEMP SENSOR 503 BR WINDSHIELD WIPER - REAR (PARK)
222 BK MONITOR PANEL CODING 1 504 YL WINDSHIELD WIPER - REAR (LOW)
223 BK MONITOR PANEL CODING 2 505 BU WINDSHIELD WIPER - REAR (HIGH)
224 BK ENGLISH/METRIC CODING 506 PU WINDSHIELD WASHER FRONT
226 BK OPERATOR MON PANEL SET POINT SELECT 507 WH WINDSHIELD WASHER REAR
227 BK TRANSMISSION CODING PIN 37 508 PU RADIO SPEAKER - LEFT
228 BK FUEL LEVEL SENDER 509 WH RADIO SPEAKER - LEFT (COMMON)
231 BK TRANSMISSION SWITCH 510 YL WINDSHIELD WASHER - PRIMER
236 BK TRANSMISSION CODING PIN 36 511 BR RADIO SPEAKER - RIGHT
241 BK OPERATOR MON PANEL TIME DELAY PIN 3 512 GN RADIO SPEAKER - RIGHT (COMMON)
242 BK OPERATOR MON PANEL TIME DELAY PIN 4 513 OR AIR CONDITIONER COMPRESSOR
243 BK OPERATOR MON PANEL TIME DELAY PIN 5 514 PU AIR CONDITIONER CONDENSOR MOTOR
244 BK OPERATOR MON PANEL TIME DELAY PIN 6 515 GY BLOWER MOTOR (HIGH)
250 BK PAYLOAD MONITOR CUSTOMER GROUND 516 GN BLOWER MOTOR (MEDIUM)
251 BK PAYLOAD MONITOR SYSTEM GROUND 517 BU BLOWER MOTOR (LOW)
252 BK PAYLOAD MONITOR GROUND INTERCONNECT 518 OR HAZARD FLASHER TO SWITCH
MACHINE BASIC CIRCUITS 519 PK THERMOSTAT TO DRYER PRESS SW
301 BU STARTER NO 1 SOLENOID TO RESISTOR 520 WH OPERATOR AIR CONDITIONER SW TO THERMOSTAT
302 OR STARTER NO 1 TO DIAGNOSTIC/RESISTOR 521 YL
AIR COND SW TO RFGT SW
TO DIAGNOSTIC 522 WH AIR COND COMPR TO THERMO SW
304 WH STARTER RELAY NO 1 OUTPUT 523 BR WINDSHIELD WIPER - LEFT (PARK)
306 GN STARTER RELAY COIL/NEUTRAL START SW 524 BU WINDSHIELD WIPER - LEFT (LOW)
307 OR KEY SW TO NEUTRAL START SW 525 GY WINDSHIELD WIPER - LEFT (HIGH)
308 YL MAIN POWER RELAY COIL 526 YL WINDSHIELD WIPER - RIGHT (PARK)
310 ETHER SW, TO ETHER SOLENOID 527 GN WINDSHIELD WIPER - RIGHT (LOW)
311 WH ETHER SOLENOID TO TEMPERATURE SW 528 PK WINDSHIELD WIPER - RIGHT (HIGH)
312 PK STARTER NO 2 SOLENOID TO RESISTOR 529 WH WINDSHIELD WASHER - LEFT
313 GY STARTER NO 2 TO DIAGNOSTIC/RESISTOR 530 OR WINDSHIELD WASHER - RIGHT
TO DIAGNOSTIC 531 WH FIRE WARNING HORN
314 PU STARTER RELAY NO 2 OUTPUT 532 WH FIRE WARNING LAMP
320 OR HORN RELAY COIL TO SWITCH 533 OR HEAT SENSOR/TEST SW
321 BR BACKUP ALARM/LAMP 534 WH HEAT SENSOR/TEST SW
322 WARNING HORN (FORWARD) 535 BU TRAVEL ALARM TIMER PRESS SW
323 YL FUEL TRANSFER PUMP POWER 536 OR TRAVEL ALARM TIMER MANUAL OVERRIDE
324 BU DIFFERENTIAL LOCKUP SOLENOID 537 GR TURN SIGNAL SW TO FLASHER
325 PK FUEL PUMP RELAY OIL PRESS SW 538 BR HAZARD INDICATOR
326 PU KEY SWITCH "C" TERMINAL 539 BU TURN SIGNAL INDICATOR BASIC/RIGHT
327 PK SHUTDOWN SOLENOID 540 WH TURN SIGNAL INDICATOR LEFT
328 OR SHUTDOWN MODULE "OFF" 541 GN ACCESSORY 1
542 BU ACCESSORY 2
BU
RD
YL
BU
GN
BR
PK
YL
YL
WH
BK
PU
GY
BR
Wire Description
Wire
Number
Wire
Colo
r
Description
Wire
Number
Wire
Colo
r
Description
Power
Circuits
Accesso
r
y
Ci
r
cuits
(Co
n
ti
n
ued)
553 YL PITCH SOLENOID TO TRIGGER SW - DUAL TILT 816 BR
A
UTO FIRE ALARM
554 PK MOMENTARY SW TO SINGLE TILT SOL - DUAL TILT 818 BR PAYLOAO MONITOR SERIAL DATA
(
TX
)
557 TRAILER CONNECTOR
(
LEFT TURN/HAZARD
)
819 GY PAYLOAD MONITOR SERIAL DATA
(
RX
)
558 TRAILER CONNECTOR
(
RIGHT TURN/HAZARD
)
820 BU PAYLOAD MONITOR TRANSMIT KE
Y
567 WH
A
/C SWITCH JUMPER 858 GY PAYLOAD MONITOR RF SIGNAL
569 PK
A
/C SWITCH JUMPER 859 YL PAYLOAD MONITOR LF SIGNAL
579 BR
A
/C BLOWER MOTOR #1 860 PK PAYLOAD MONITOR RR SIGNAL
580 OR
A
/C BLOWER MOTOR #2 861 PU PAYLOAD MONITOR L.R SIGNAL
LIGHTING CIRCUITS 863 BU PAYLOAD MONITOR TRANS LCD OUT
600 BR DASH BASIC 864 BR PAYLOAD MONITOR CLOCK LCD OUT
601 GY DASH HIGH 865 GY PAYLOAD MONITOR LATCH LCD OUT
602 WH DOME 866 PK PAYLOAD MONITOR TEST/SET
603 PK ROTARY BEACON 867 PU PAYLOAD MONITOR CALIBRATE
604 OR STOP 870 OR 3 POINT HITCH CONTROL
605 YL TURN LEFT 871 BU 3 POINT HITCH CONTROL
606 GY TURN RIGHT 872 YL 3 POINT HITCH CONTROL
607 PK FLOOD FRONT 888 PK 3 POINT HITCH CONTROL
608 GN FLOOD REAR 889 GY 3 POINT HITCH CONTROL
609 YL FLOOD SIDE 890 PU 3 POINT HITCH CONTROL
610 OR HEAD LAMP BASIC
611 PU HEAD LAMP HIGH
612 BACKUP
613 LICENSE PLATE
614 PARK/T AIL/DASH
615 CAB FLOOD/ROPS
616 BUCKET FLOOD
617 BR TAIL/POSITION LAMP - LEFT
(
ROADING PACKAGE
)
618 YL TAIL/POSITION LAMP - RIGHT
(
ROADING PACKAGE
)
619 GR HEAD LAMP LOW
620 WH FLOOD - FRONT
(
ATTACH
)
(
ENGINE FLOOD LAMP
)
622 PU FLOOD LAMP 3 WAY SW JUMPER
623 BU FLOODLAMP 3 WAY SW JUMPER
624 FLOODLAMP BOWL
625 COURTESY LAMP
630 FLOOD REAR
(
ATTACH
)
635 BR TURN SIGNAL COMMON
635 BU PAYLOAD MONITOR RED LIGHT
636 GN PAYLOAD MONITOR AMBER LIGHT
CONTROL CIRCUITS
700 PK
A
NTISPIN TEST SW
702 OR TRANSMISSION BRAKE SW JUMPER
703 BU TRANSMISSION UP SOLENOID
704 GY TRANSMISSION DOWN SOLENOID
705 PK TRANSMISSION LOCKUP CLUTCH SOL BASIC
706 BR TRANSMISSION RETARDER SW
707 PU TRANSMISSION BED RAISE SW
708 YL TRANSMISSION HOLD SW
709 OR TRANSMISSION PICKUP POWER
710 GN TRANSMISSION SPEED PICKUP SIGNAL
711 BR TRANSMISSION LEVER CODE 1
712 WH TRANSMISSION LEVER CODE 2
713 OR TRANSMISSION LEVER CODE 3
714 YL TRANSMISSION LEVER CODE 4
715 GN TRANSMISSION LEVER CODE 5
716 BU TRANSMISSION LEVER CODE 6
720 PU TRANSMISSION BRAKE SW
721 BR TRANSMISSION GEAR CODE 1
722 WH TRANSMISSION GEAR CODE 2
723 OR TRANSMISSION GEAR CODE 3
724 YL TRANSMISSION GEAR CODE 4
725 GN TRANSMISSION GEAR CODE 5
726 BU TRANSMISSION GEAR CODE 6
727 GN STEERING MOTOR RELAY
728 BU SUPPLEMENTAL STEERING CONTROL SW
733 BR SWITCHING GEAR CODE 1 FRONT
734 WH SWITCHING GEAR CODE 2 FRONT
735 OR SWITCHING GEAR CODE 3 FRONT
736 YL SWITCHING GEAR CODE 4 FRONT
737 GN SWITCHING GEAR CODE 5 FRONT
738 BR SWITCHING GEAR CODE 1 REAR
739 WH SWITCHING GEAR CODE 2 REAR
740 OR SWITCHING GEAR CODE 3 REAR
741 YL SWITCHING GEAR CODE 4 REAR
742 GN SWITCHING GEAR CODE 5 REAR
743 PU SWITCHING NEUTRAL/RUN SW
744 BU SWITCHING UP SOLENOID
745 GY SWITCHING DOWN SOLENOID
746 PK SWITCHING SYNCHRONIZE SOLENOID
747 WH SWITCHING NO SYNCHRONIZE SOLENOID
756 WH TRANSMISSION LOCKUP CLUTCH SOLENOID
761 GY LIFT KICKOUT SOLENOID SW
762 YL BUCKET POSITIONER SOLENOID SW
763 TOR
Q
UE CONVERTER SOLENOID
764 PU SUPPLEMENTAL STEERING CONTROL
SW
(
MOTOR GRADER
)
765
OR
APRON SOLENOID
(
SCRAPER
)
767 WH
A
NTISPIN PICKUP POWER
768 OR
A
NTISPIN PICKUP TRANSMISSION
769 BU
A
NTISPIN PICKUP LEFT
770 GN
A
NTISPIN PICKUP RIGHT
771 PU
A
NTISPIN SERVICE BRAKE SW
772 BR
A
NTISPIN RETARDER SW
773 GY
A
NTISPIN SERVOVALVE
774 YL
A
NTISPIN SOLENOID - LEFT
775 BR
A
NTISPIN SOLENOID - RIGHT
779 WH COUPLER DISENGAGE SOLENOID
780 PU COUPLER ENGAGE SOLENOID
794 YL PAYLOAD MONITOR TRANSMSSION PICKUP
799 WH PAYLOAD MONITOR SENSOR POWER
803 BU
A
UTO FIRE SYSTEM SW POWER
805 PK
A
UTO FIRE BRAKE SW
807 BR
A
UTO FIRE NITROGEN SW
808 PU
A
UTO FIRE NITROGEN SW
809 GN
A
UTO FIRE SYSTEM WARNING CKT
810 BU
A
UTO FIRE SYSTEM FAILURE CKT
811 GY FIRE TEST CKT
812 GN FIRE NITROGEN ACTUATION SOL
813 PK
A
GENT CYLINDER SW.
(
2
)
GN
YL
GY
PU
PK
YL
BU
BK
YL
GY
BU
Component Location Chart
Machine
Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
1 Alarm-Backup 13 Starter E-2
A Alarm-Fault (EMS) D-8 14 Switch-Backup Alarm E-7
2 Alternator A-1 A Switch-Blower Speed (A/C) E-6
3 Batteries 15 Switch-Disconnect F-5
B Breaker -Alternator E-8 A Switch-Dome Lamp A-7
B Breaker-Blower Motor F-7 A Switch-EMS Test C-5
A EMS Panel (Operator Monitor) C-6 16 Switch-Engine Coolant Flow (EMS) B-2
A Gauge-Engine Coolant Temperature A-5 17 Switch-Engine Coolant Temperature (EMS) B-1
A Gauge-Hydraulic Oil Temperature B-5 18 Switch-Engine Coolant Temperature (S.Aid) B-2
A Gauge-Power Train Oil Temperature B-5 19 Switch-Engine Oil Pressure (EMS) B-2
4 Horns-Forward E-1 20 Switch-Engine Oil Pressure (Service Meter) B-2
A Meter-Service
A-5 A Switch-Flood Lamp C-5
C Motor-Blower
D-4 A Switch-Forward Horn A-7
C
Motor-Blower
D-3 21 Switch-Fuel Pressure (EMS) B-2
5 Motor-Washer A-8 22 Switch-Hydraulic Oil Temperature (EMS) A-7
A Motor-Wiper
(Front) B-4 A Switch-Key Start D-5
A Motor-Wiper (Left) F-5 23 Switch-Neutral/Start D-7
A Motor-Wiper (Rear) D-8 24 Switch-Power Train Filter (Diff. Press.) A-8
A Motor-Wiper (Right) A-6 25 Switch-Power Train Oil Temperature (EMS) A-3
B Relay-Main Power F-9 26 Switch-Power Train Oil Temperature (Filter) A-3
B Relay-Start F-7 27 Switch-Refrigerant Pressure (A/C) A-2
C Resistor-Blower Motor Speed C-4 A Switch-Ripper Pin Puller A-8
6 Resistor-Starter to Diagnostic Connector E-1 A Switch-Running Lamp B-5
7 Sender-Engine Coolant Temperature A-1 A Switch-Start Aid D-5
8 Sender-Hydraulic Oil Temperature A-7 A Switch- Thermostat (A/C) E-6
9 Sender-Power Train Oil Temperature A-3 A Switch-Wiper (Front) B-7
10 Solenoid-Air Conditioner Clutch A-2 A Switch-Wiper (Left) B-7
11 Solenoid-Ripper Pin Puller B-9 A Switch-Wiper (Rear) B-8
12 Solenoid-Start Aid B-1 A
Switch-Wiper (Right)
B-8
E-9
F-5,6
A - COMPONENTS INSIDE THE CAB
B - COMPONENTS ON THE RELAY PANEL
HARNESS CONNECTOR LOCATION CHART
Connectors
Machine
Location
Harness And/O
r
Com
p
onents
S
c
h
ema
ti
c
Location
Connectors
Machine
Location
H
arness
A
n
d/
o
r
Components
S
c
h
ema
ti
c
Location
A-7T8315
7 CONTACTS
A-7T8315
C-2
20 CONTACTS Diagnostic Connector C-7T8327
A-7T8315
C-6 A-7T8315
C-5
Operator Monitor (EMS) B-7T8326
10 CONTACTS
MM-7T9222 B-7 A-7T8315
A-7
NN-7T9218
E-9W2535
9 CONTACTS
A-7T8315 E-4 A-7T8315
B-3
B-7T8326 CONTACTS F-9W2536
A-7T8315 A-7T8315
A-4
8 CONTACTS
C-7T8327 M-3T7147
MM-7T9222 B-8 A-7T8315
D-4
NN-7T9218
N-9W1816
A-7T8315
B-9
Ripper Pin Puller Solenoid
C-2
E-4
N.O. = NORMALLY OPEN
N.C. = NORMALLY CLOSED
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
3T5825 Power Train Oil Temp. (EMS) 129.4 ± 2.8°C 118.3°C MIN N.C.
(265 ± 5°F) (245°F MIN)
6T4949 Engine Oil Pressure (EMS) 93 ± 21 kPa 69 ± 21 kPa N.O.
Engine Oil Pressure (S.Meter) (13.5 ± 3.0 psi) (10.0± 3.0 psi)
6T9316 Engine Coolant Flow (EMS) 37 ± 3g 31 g MIN N.O.
(1.3 ± 0.1 oz) (1.1 oz MIN)
7N9785 Engine Coolant Temp. (EMS) 107.2 ± 2.8°C 91.0°C MIN N.C.
(225 ± 5°F) (196°F MIN)
8N2248 Hydraulic Oil Temperature (EMS) 101.7 ± 2.8°C 93.3°C MIN N.C.
(215 ± 5°F) (200°F MIN)
9G3341 Power Train Oil Temp. (Filter) (EMS) 51.7 ± 2.8°C 43.0°C MIN N.C.
(125 ± 5°F) (110°F MIN)
9W3187 Fuel Pressure (EMS) 93 ± 21 kPa 69 ± 21 kPa N.C.
(13.5 ± 3.0 psi) (10.0 ± 3.0 psi)
reasing pressure the closed
3
4
5
6
8
9
10
11
12
14
15
13
16
1
2
17
18
19
20
21
22
23
24
25
26
7
27
1
2
3
4
5
6
7
8
9
10
11
12
13
Harness Connector And Component Locations
C16399X1
C16398X1
3
4
5
8
9
10
11
12
14
15
13
16
1
2
17
18
19
20
21
22
23
24
7
25
26
27
1
2
3
4
5
6
7
8
9
10
11
12
13
10
9
8
7
6
5
4
3
13
12
11
1
2
F
112-PU
FLOOD
LAMP
2S4783
308-YL
112-PU-14
112-PU-14
112-PU-14
112-PU-14
109-OR-14
112-PU-14
308-YL
200-BK
DIAGNOSTIC CONNECTOR
E
D
C
B
A
F
E
D
C
B
A
9 8 7 6 45 3 2 19 8 7 6 45 3 2 1
9 8 7 6 45 3 2 1
BACKUP ALARM
BK-14
BK/PK-14
121-YL
321-BR
2
1
KK A
3T1815
608-GN-14
TO
FUEL
TANK
TO
BRACKET
608-GN-14
200-BK-14
608-GN-14
200-BK-14
1
2
U
A
608-GN-14
200-BK-14
608-GN-14
200-BK-14
321-BR
121-YL
779-WH
780-PU
2
1
1
4
3
2
A
779-WH
200-BK
200-BK
780-PU
WH
BK
BK
WH
RIPPER
PIN PULLER
SOLENOID
6T3383
S A
608-GN-14
200-BK-14
1M1882
RIPPER
FLOOD
LAMP
FLOOD LAMP
2S4783
608-GN-14
WASHER
PUMP
7T8891
MOTOR
200-BK-14
K
NN
K
L
510-YL-14 510-YL-14
510-YL-14
2
1
503-BR-14
OPERATOR STATION
ALT
BREAKER
9S0173
KEY
FUSE
3K8782
FRONT
DASH
DOME
FUSE
3K8782
FUSE HOLDER
OPERATOR STATION
4K5122
410-WH
201-BK
RD
BK
1
2
2
FUSE
NOTE C
RELAY PANEL
FORWARD HORN
BACK-UP ALARM
SIDE & REAR FLOOD LAMPS
OPERATOR MONITOR
GAUGES & SERVICE METER
WIPER MOTORS
114-GN
200-BK
200-BK-14
306-GN
304-WH
RELAY PANEL
109-OR-6
124-GN-14
20A
BLOWER MOTOR
BREAKER
3T8728
304-WH-8
121-YL
116-BR-14
113-OR
123-WH
108-BU-14
109-OR-6
101-RD
112-PU
308-YL
203-BK
311-WH
310-PU
302-OR
207-BK
304-WH
MAIN RELAY
3T0376
(REPLACES
112-PU-14
109-OR-6
109-OR-6
TERMINAL
BLOCK AT F-8
WHEN LOAD
CURRENT
EXCEEDS 10 AMPS
306-GN
A
12
8
3
11
10
2
7
4
20
19
18
6
5
17
16
15
14
13
1
9
105-BR
109-OR
60A
TERMINAL BLOCK
6T0751
START RELAY
9F3099
308-YL
200-BK
109-OR-6
112-PU-14
10A
10A
10A
10A
10A
15A
112-PU-14
109-OR-14
101-RD-14
101-RD-6
105-BR
102-BU-14
10A
10A
112-PU-14
112-PU-14
112-PU-14
112-PU-14
FAULT
ALARM
9G9813
BACKUP
ALARM SW
7G9703
REAR
MOTOR
GN
GY
BR
OR
PP
1
3
4
2
504-YL-14
108-BU-14
503-BR-14
505-BU-14
L
H
T
WIPER
6T6216
526-YL-14
527-GN-14
528-PK-14
108-BU-14
102-BU-14
108-BU-14
526-YL-14
527-GN-14
528-PK-14
504-YL-14
505-BU-14
108-BU-14
REAR WIPER SW
3T6655
RIGHT WIPER SW
108-BU-14
510-YL-14510-YL-14
OPERATOR STATION
6T6970
PIN PULLER SW
8N2248
HYDRAULIC SW
FILTER SW
POWERTRAIN
3T9343
(NOTE B)
779-WH
780-PU
608-GN-14
200-BK-14
121-YL
321-BR
HYDRAULIC
114-GN
8N3844
SENDER
3T6655
108-BU-14
102-BU-14
108-BU-14
6
MM
NN
W
HB B H
W
P
P
HB B H
W P
HB B H
W P
HB B H
4
7
8
3
5
1
2
T
T
1
2
3
4
442-GY
404-YL
201-BK
FORWARD
HORN SW
DOME LAMP SW
7N8000
102-BU-14
510-YL-14
510-YL-14
108-BU-14 108-BU-14
108-BU-14
FRONT WIPER SW
3T6655
LEFT WIPER SW
3T6655
102-BU-14
GG
DOME LAMP
7N8043
3T2357
426-BR
442-GY
404-YL
201-BK
426-BR
E A
322-GY
114-GN
200-BK-14
608-GN-14
321-BR
121-YL
MM
NN
7
6
5
4
3
2
1
9
8
10
523-BR-14
524-BU-14
525-GY-14
108-BU-14
500-BR-14
501-GN-14
502-OR-14
108-BU-14
523-BR-14
524-BU-14
525-GY-14
108-BU-14
500-BR-14
501-GN-14
502-OR-14
108-BU-14
NEUTRAL/
START SW
9W1581
307-OR
306-GN
BK/PK
BK/PK
200-BK
321-BR
1
A
2
203-BK
311-WH
310-PU
124-GN-14
306-GN
308-YL
105-BR
102-BU-14
302-OR
207-BK
304-WH-8
101-RD-6
109-OR-6
200-BK-14
114-GN
121-YL
116-BR-14
113-OR
123-WH
108-BU-14
410-WH
201-BK
321-BR
306-GN
307-OR
306-GN
307-OR
1
2
A
H
306-GN
307-OR
TEST
LAMP
ALARM
OPERATOR
MONITOR
3T9100
+BATTERY
COOL FLOW
PWR TN FLTR
ALTERNATOR
ENGINE OIL PR
FUEL PR
COOL TEMP
PWR TN TEMP
HYD TEMP
GROUND
527-GN-14
108-BU-18
526-YL-14
528-PK-14
RIGHT
WIPER
6T5855
GN
GY
BR
DR
MM
H
L
MOTOR
T
1
3
4
2
COOLANT
TEMP
LAMP
5D0019
LAMP
5D0019
4W0483
443-YL
441-OR
200-BK
123-WH
IGN
SEND
GRD
IGN
SEND
GRD
POWER TRAIN
TEMP
4W0485
123-WH
201-BK
201-BK
201-BK
201-BK
201-BK
201-BK
201-BK
201-BK
201-BK
411-PK
415-GN
404-YL
404-YL
424-GY
406-PU
413-BR
405-GY
403-GN
426-BR
412-BU
113-OR
410-WH
201-BK
406-PU
413-BR
405-GY
403-GN
426-BR
412-BU
113-OR
410-WH
411-PK
415-GN
424-GY
18
17
20
A
16
8
2
9
14
4
6
13
5
3
19
12
1
10
11
15
7
102-BU-14
201-BK
201-BK
R
308-YL
308-YL
BLOWER SW
6P3236
124-GN-14
521-YL-14
515-GY-14
515-GY-14
516-GN-14
517-BU-14
RED
BLK
BLU
GRN
OR
1
2
5
4
3
C
S
B
OFF
ON
ST
THERMOSTAT SW
6T9395
T
200-BK-14
522-WH-14
522-WH-14
200-BK-14
515-GY-14
515-GY-14
516-GN-14
517-BU-14
521-YL-14
124-GN-14
524-BU-14
OPERATOR STATION
108-BU-14
523-BR-14
525-GY-14
GN
GY
BR
OR
1
3
4
2
MM
RD-00
BK-00 BK-00
TO
DD
CC
FRAME
DISCONNECT SW
7N0718
BK-00
203-BK
BBAA
POS
12V BATTERY
9G4247 STD
9G2648 ATCH
12V BATTERY
9G4247 STD
9G2648 ATCH
NEG POS NEG
L
H
MOTOR
T
WIPER
LEFT
6T5856
MOUNTING
PANEL
TO GAUGE
BOLT
BASE
7G9730
KEY START SW
9G7641
307-OR
105-BR
105-BR
307-OR
308-YL
310-PU
609-YL-14
608-GN-14
116-BR-14
102-BU-14
610-OR-14
124-GN-14
521-YL-14
522-WH-14
200-BK-14
124-GN-14
521-YL-14
522-WH-14
200-BK-14
124-GN-14
521-YL-14
522-WH-14
200-BK-14
1
2
N A
B
OPERATOR STATION
A
IM A
4
3
517-BU-14
516-GN-14
515-GY-14
515-GY-14
102-BU-14
116-BR-14
108-BU-14
102-BU-14
108-BU-14
102-BU-14
105-BR
609-YL-14
610-OR-14
307-OR
308-YL
310-PU
608-GN-14
102-BU-14
116-BR-14
105-BR
609-YL-14
610-OR-14
307-OR
308-YL
310-PU
608-GN-14
1
8
2
1
2
9
4
6
3
7
5
200-BK-14
200-BK-14
517-BU-14
AID SW
3T3453
START
310-PU
200-BK
411-PK
201-BK
201-BK
415-GN
200-BK
411-PK
201-BK
415-GN
411-PK
415-GN
OPERATOR
TEST
MONITOR
FLOOD
3T-1730
LAMP SW
RUNNING
7N8005
LAMPS SW
7N8001
MASTER
LAMP
FAULT
7N1996
BASE
3T0304
201-BK
1
3
4
A B
2
516-GN-14
515-GY-14
515-GY-14
LAMP
PANEL
200-BK
200-BK
600-BR
7N9967
609-YL14
608-GN-14
116-BR-14
102-BU-14
600-BR
600-BR
200-BK
BASE
7G9730
B
Q
610-OR 610-OR
426-BR
412-BU
403-GN
405-GY
413-BR
406-PU
201-BK
MOTOR
BLOWER
9G8693
BK-14
WH/R-14
200-BK-14
515-GY-14
1
2
N
515-GY-14
516-GN-14
517-BU-14
RESISTOR
9G1950
BLOWER
9G8697
MOTOR
N
113-OR
410-WH
201-BK
424-GY
404-YL
201-BK
201-BK
441-OR
442-GY
443-YL
400-GN
123-WH
PANEL
LAMP
7N9967
HYDRAULIC OIL
TEMP
LAMP
5D0019
123-WH
442-GY
200-BK
IGN
SEND
GRD
4W0484
2
5
1
4
610-OR-14
SERVICE
METER
6T7337
400-GN
-
+
OPERATOR STATION
WH
123-WH
442-GY
441-OR
443-YL
123-WH
442-GY
441-OR
443-YL
201-BK
200-BK
4
1
3
2
M A
200-BK-14
517-BU-14
516-GN-14
515-GY-14
515-GY-14
200-BK-14
200-BK-14
515-GY-14
BK-14
WH/R-14
2
1
TO
MODULE
200-BK-8
200-BK-14
121-YL
321-BR
114-GN
123-WH
113-OR
201-BK
410-WH
123-WH
113-OR
201-BK
410-WH
412-BU
441-OR
406-PU
403-GN
201-BK
405-GY
400-GN
413-BR
404-YL
442-GY
201-BK
426-BR
424-GY
201-BK
443-YL
FRONT
WIPER
6T6216
L
H
T
MOTOR
MM
200-BK
200-BK-14
200-BK-14
200-BK
OPERATOR STATION
201-BK
502-OR-14
500-BR-14
108-BU-14
501-GN-14
OR
BR
GY
GN
2
4
3
1
443-YL
424-GY
POWERTRAIN
OIL SENDER
8N3844
POWERTRAIN
OIL SW
609-YL-14
T
T
T
3T5825
POWERTRAIN
SW
9G3341
426-BR
201-BK
201-BK
443-YL
424-GY
201-BK
426-BR
443-YL
424-GY
201-BK
426-BR
322-GY
200-BK-14
404-YL
442-GY
121-YL
321-BR
114-GN
121-YL
321-BR
114-GN
608-GN-14
201-BK
426-BR
443-YL
424-GY
201-BK
426-BR
1
2
4
3
A
F
310-PU
311-WH
307-OR
108-BU-14
308-YL
116-BR-14
105-BR
102-BU-14
310-PU
610-OR-14
609-YL-14
608-GN-14
609-YL-14
200-BK-14
321-BR
113-OR
123-WH
410-WH
201-BK
121-YL
114-GN
307-OR
116-BR-14
108-BU-14
306-GN
306-GN
308-YL
102-BU-14
105-BR
124-GN-14
310-PU
311-WH
608-GN-14
FLOOD
LAMP
3T2135
AUX START
RECEPTACLE
STARTER
6N1889 STD
3T8967 ATCH
RESISTOR
6T2217
MM
RD-00
RD-00
BUS BAR
7T7768
A
G S
MTR BAT
FF
MOTOR
A R
1
2
TO
FRAME
200-BK-8
EE
BK-00
304-WH-8
BK-00
304-WH-8
207-BK
101-RD-6
302-OR
109-OR-6
610-OR-14
200-BK
322-GY
521-YL-14
522-WH-14
310-PU
311-WH
412-BU
441-OR
406-PU
403-GN
201-BK
405-GY
400-GN
413-BR
412-BU
441-OR
406-PU
403-GN
201-BK
405-GY
400-GN
413-BR
A C
A C
8
5
6
2
1
4
3
7
7
6
5
1
4
3
2
610-OR-14
200-BK
200-BK
322-GY
521-YL-14
522-WH-14
310-PU
311-WH
412-BU
441-OR
406-PU
403-GN
201-BK
201-BK
109-OR-6 109-OR-6
A C
JJ
TO
ENG
BLOCK
HEAD
LAMP
2S4788
FORWARD
HORN
7T0970
FORWARD
HORN
7T0969
610-OR-14
ABBREV
RD
WH
OR
YL
PK
BK
GY
PU
BR
GN
BU
COLOR
SYMBOL
109-OR-6
DESCRIPTION
IDENT PART NO.
HARNESS AS.
WIRE AS.
CABLE AS.
LOC.
BLADE, SPADE, RING,
OR SCREW TERMINAL
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
INTERNAL ELECTRICAL
OF COMPONENT
CONNECTION TO SURFACE
CONNECTOR
COMPONENT
ATCH WIRE, CABLE,
DESIGNATION
CIRCUIT GROUPING
RED
WHITE
ORANGE
YELLOW
PINK
BLACK
GRAY
PURPLE
BROWN
GREEN
BLUE
A
B
C
D
E
F
H
L
M
N
S
U
KK
MM
NN
PP
K
Q
R
GG
JJ
G
G
AA
BB
CC
DD
EE
FF
HH
7T8315
7T8326
7T8327
9W2534
9W2535
9W2536
9W5275
7T0303
3T7147
9W1816
3T8387
9W0089
9G6259
7T9222
7T9218
3T6373
3T7983
9W3623
7G0530
9G7285
9F4337
5H0837
4D6565
9W2532
3P2179
3P2181
6T9661
9W2533
9W2531
9W2647
HEAD
LAMP
2S4787
21MAY86
C-6
E-4
C-2
D-1
A-7
A-3
E-6
B-8
A-5
D-4
C-9
C-9
E-9
B-7
B-7
D-8
B-8
B-5
A-2/F-2
A-7
E-2
A-1 STD
A-1 ATCH
F-6
F-5
F-5
F-5
F-2
E-2
F-2
441-OR
403-GN
109-OR-6
610-OR-14
FUEL SW
9W3187
ENGINE
OIL SW
6T4949
ENGINE
OIL SW
6T4949
T
311-WH
COOLANT SW
8N1693
COOLANT
FLOW SW
6T9316
406-PU
COOLANT SW
7N9785
413-BR
201-BK
400-GN
201-BK
405-GY
201-BK
200-BK
311-WH
310-PU
BK-18
BK-18
1
2
C
406-PU
201-BK
201-BK
412-BU
441-OR
403-GN
2
1
2
1
C C
RD-18
BK-18
RD-18
BK-18
200-BK
310-PU
311-WH
608-GN-14
FLOOD
LAMP
1
2
A R
3T2135
REFRIGERANT SW
(NOTE A)
8T8639
AIR
CONDITIONER
CLUTCH
SOLENOID
7N4297
BK-8
G
R +
ALT
ALTERNATOR
6N9294 STD
5S9088 ATCH
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHANGE
NOTE B: NORMALLY OPEN BEFORE INSTALLATION
THIS SCHEMATIC IS FOR THE D8N TRACTOR
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAUGE
NOTE C: FUSES 10A - 3K8782, 15A - 8M8948
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
AND XMSN SHIFTER IN NEUTRAL
COOLANT
SENDER
6N5926
201-BK
201-BK
412-BU
521-YL-14
521-YL-14
513-OR-14
513-OR-14
522-WH-14 522-WH-14
BK-18
BK-18
1
2
2
1
521-YL-14
513-OR-14
C
T
T
C
START AID
SOLENOID
9G4365
322-GY-14
200-BK-14
610-OR-14
322-GY
200-BK
610-OR-14
3
1
2
D
C
207-BK
BK-6
BK-00
RD-00
301-BU
302-OR
2
1
101-RD-6
322-GY-14
200-BK-14
L
#
THE DISCONNECT SWITCH IS ON AND
THE KEY SWITCH IS OFF
WIRES THAT HAVE VOLTAGE WHEN
THE DISCONNECT SWITCH IS ON AND
THE KEY SWITCH IS OFF -
ATTACHMENT
THE KEY SWITCH IS OFF
WIRES THAT HAVE VOLTAGE WHEN
THE KETY SWITCH IS ON -
ATTACHMENT
WIRES THAT HAVE VOLTAGE WHEN
WIRES THAT HAVE VOLTAGE WHEN
THE RUNNING LAMP SWITCH IN THE
PANEL LAMP POSITION
WIRES THAT HAVE VOLTAGE WITH
THE RUNNING LAMP SWITCH IN THE
PANEL LAMP POSITION -
ATTACHMENT
WIPER/WASHER CIRCUIT -
ATTACHMENT
AIR CONDITIONER CIRCUIT -
AIR CONDITIONER CIRCUIT
GROUND
GROUND - ATTACHMENT
ATTACHMENT
WIRES THAT HAVE VOLTAGE WITH
GAUGE CIRCUIT
EMS CIRCUIT - INPUTS
EMS CIRCUIT - OUTPUTS
STARTING CIRCUIT
