SENR3924 January 1988
6
3
24
10
5
14
3 5
11 13
1
7
9
A
12
4
2
10
B
4
12
25
9
2
21
20
19
23
13
14 22
15
11 17 7
1
8
18 27
8
14
6
16
26
10
428 & 438 Backhoe Loaders Electrical System 13
6TC1-7999 3DJ1-999
12
A 10 19 11
B 7 1
4
2 14
7
1
3 24
9 8
18 13
5 25 16
17 27 8
4
12
6 14
5
20 21
22
9
2
23
26
11 10 3 15
6
Circuit Number
Color
630 631 632 633 634 635 635 636 637
GY GY WH BU WH BR BU GN GN
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
PK OR OR BU GY PK BR PU YL OR GN BR WH OR YL GN BU BR PU BR WH OR YL GN BU GN BU PU OR BU BR BR WH OR YL GN BR WH OR YL GN PU BU GY PK WH BR OR
750 751 752 753 754 755 756 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790
GN GN YL GY BU OR WH GY YL BU PU OR GN WH OR BU GN PU BR GY YL BR YL PU BR WH PU PK GY OR YL PK GN WH YL PK BU
C14612X1 C10282X3
Description LIGHTING CIRCUITS (CONT.) FLOOD REAR (ATTACH) FOG LAMP-RIGHT FOG LAMP-LEFT ATTACH LIGHTING CIRCUIT HEAD LAMP SW TO WORK/HEAD LAMP JUMPER TURN SIGNAL COMMON PAYLOAD MONITOR RED LIGHT PAYLOAD MONITOR GREEN LIGHT LOCKUP CLUTCH LAMP CONTROL CIRCUITS ANTISPIN TEST SWITCH TRANSMISSION LOCKUP CLUTCH SOL (SCRAPER) TRANSMISSION BRAKE SWITCH JUMPER TRANSMISSION UP SOLENOID TRANSMISSION DOWN SOLENOID TRANSMISSION LOCKUP CLUTCH SOL BASIC TRANSMISSION RETARDER SWITCH TRANSMISSION BED RAISE SWITCH TRANSMISSION HOLD SWITCH TRANSMISSION PICKUP POWER TRANSMISSION SPEED PICKUP SIGNAL TRANSMISSION LEVER CODE 1 TRANSMISSION LEVER CODE 2 TRANSMISSION LEVER CODE 3 TRANSMISSION LEVER CODE 4 TRANSMISSION LEVER CODE 5 TRANSMISSION LEVER CODE 6 BOWL APRON SOL FLOAT/VCTC SOL TRANSMISSION BRAKE SW. TRANSMISSION GEAR CODE 1 TRANSMISSION GEAR CODE 2 TRANSMISSION GEAR CODE 3 TRANSMISSION GEAR CODE 4 TRANSMISSION GEAR CODE 5 TRANSMISSION GEAR CODE 6 STEERING MOTOR RELAY SUPPLEMENTAL STEERING CONTROL SWITCH EJECTOR RETURN SOLENOID EJECTOR RETURN DETENTED SOLENOID EJECTOR EJECT DETENTED SOLENOID EJECTOR KICKOUT ON RETURN SOLENOID SWITCHING GEAR CODE 1 FRONT SWITCHING GEAR CODE 2 FRONT SWITCHING GEAR CODE 3 FRONT SWITCHING GEAR CODE 4 FRONT SWITCHING GEAR CODE 5 FRONT SWITCHING GEAR CODE 1 REAR SWITCHING GEAR CODE 2 REAR SWITCHING GEAR CODE 3 REAR SWITCHING GEAR CODE 4 REAR SWITCHING GEAR CODE 5 REAR SWITCHING NEUTRAL/RUN SW. SWITCHING UP SOLENOID SWITCHING DOWN SOLENOID SWITCHING SYNCHRONIZE SOLENOID SWITCHING NO SYNCHRONIZE SOLENOID SUPPLEMENTAL STEERING DUMP VALVE (MOTOR GR.) SUPPLEMENTAL STEERING GOVERNOR SWITCH (MOTOR GR.) EJECTOR KICKOUT COUNTERSHAFT SHIFT SOLENOID NO.1 OR 3 COUNTERSHAFT SHIFT SOLENOID NO. 2 LOCKUP CLUTCH CONTROL TO SWITCH COUNTERSHAFT SHIFT SOLENOID NO.3 OR 1 COUNTERSHAFT SHIFT SOLENOID NO.4 OR 5 TRANSMISSION LOCKUP CLUTCH SOLENOID LIFT KICKOUT SOLENOID SW. BUCKET POSITIONER SOLENOID SW. TORQUE CONVERTER SWITCH SUPPLEMENTAL STEERING CONTROL SW./MOTOR GR.) APRON SOLENOID (SCRAPER) TRANSMISSION DISCONNECT SOLENOID ANTISPIN PICKUP POWER ANTISPIN PICKUP TRANSMISSION WHEEL SPEED PICKUP-LEFT WHEEL SPEED PICKUP-RIGHT ANTISPIN SERVICE BRAKE SW. ANTISPIN RETARDER SW. ANTISPIN SERVOVALVE ANTISPIN SOLENOID-LEFT ANTISPIN SOLENOID-RIGHT BRAKE RELEASE RELAY CONTROL BRAKE RELEASE MOTOR DIRECT DRIVE LOW RANGE SOLENOID COUPLER ENGAGE SOLENOID COUPLER DISENGAGE SOLENOID AUGER MASTER SW. TO AUGER SW. 4TH VALVE SW. TO 4TH VALVE SOLENOID DOWNSHIFT INHIBIT LOCKUP CLUTCH INHIBIT ENGINE SPEED CONTROL PRESS. SW. TO MODE SW. ENGINE SPEED CONTROL-HI PRESSURE SWITCH AUGER SWITCH TO AEM RESISTOR ENGINE SPEED (+) CONTROL LEVER LOCK ENGINE SPEED CONTROL-MEDIUM SPEED SOLENOID
Circuit Number
Color
791 792 793 794 795 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 838 839 856 857 858 859 860 861 863 864 865 866 867 870 871 872 873 874 878 888 889 890 896 897 898 904 905 906 907 908 910 916 916 917 918 919 929 930 931 932 933
PK OR YL YL YL GN WH BU PK YL BU GN PK GY BR PU GN BU GY GN PK YL WH BR WH BR GY BU YL PK YL BU GN OR GY YL PK PU BU BR GY PK PU OR BU YL WH GY OR PK GY PU GN GN PU WH PK PU YL GY YL BU GY WH OR GN GN BR GY GN PU
Description CONTROL CIRCUITS (CONT.) ENGINE SPEED CONTROL-LOW SPEED SOLENOID UNDERSPEED PROPORTIONAL SOLENOID ENGINE SPEED CONTROL-LOW PRESSURE SWITCH PAYLOAD MONITOR TRANSMISSION PICKUP DUAL kW SOLENOID FAST DUMP SW. TO 4TH FUNCTION SW. PAYLOAD MONITOR SENSOR POWER AUTOMATIC MODE-LOCKUP CLUTCH LUBE SOLENOID LUBE PRESSURE SWITCH AUTO FIRE SYSTEM SWITCH POWER AUTO FIRE BRAKE SWITCH AUTO FIRE BRAKE SWITCH AUTO FIRE DISCHARGE SWITCH AUTO FIRE NITROGEN SWITCH TO CONTROL AUTO FIRE NITROGEN SW. TO NITROGEN SW. AUTO FIRE SYSTEM WARNING CKT. AUTO FIRE SYSTEM FAILURE CKT. FIRE TEST CKT. FIRE NITROGEN ACTUATION SOLENOID AUTO FIRE AGENT CYLINDER SW. TO NITROGEN SW. AUTO FIRE AGENT SW. TO AGENT SW. LOCKUP CLUTCH TRANSMISSION PRESSURE SW. AUTO FIRE ALARM BACKUP ALARM RELAY PAYLOAD MONITOR SERIAL DATA (TX) PAYLOAD MONITOR SERIAL DATA (RX) PAYLOAD MONITOR TRANSMIT KEY LOCKUP CLUTCH PRESSURE SENSOR RETURN FORWARD HYDRST SYNC SOLENOID FRONT GUARD MOTOR FRONT GUARD MOTOR ENGINE UNDERSPEED CONTROL-THROTTLE SWITCH SWING ORIFICE SOLENOID (EXCAVATOR) PAYLOAD MONITOR RIGHT FRONT SIGNAL PAYLOAD MONITOR LEFT FRONT SIGNAL PAYLOAD MONITOR RIGHT REAR SIGNAL PAYLOAD MONITOR LEFT REAR SIGNAL PAYLOAD MONITOR TRANSMIT LCD OUT PAYLOAD MONITOR CLOCK LCD OUT PAYLOAD MONITOR LATCH LCD OUT PAYLOAD MONITOR TEST/SET PAYLOAD MONITOR MODE 3 POINT HITCH CONTROL-DOWN SOLENOID 3 POINT HITCH CONTROL-SOLENOID COMMON 3 POINT HITCH CONTROL-UP SOLENOID FRONT GUARD POWER REAR GUARD POWER DISPLACEMENT SOLENOID 3 POINT HITCH CONTROL-HITCH POSITION 3 POINT HITCH CONTROL-HANDLE POSITION 3 POINT HITCH CONTROL-HOOKUP SWITCH NEUTRAL START CONTROL TO AUGER MASTER SW. REAR GUARD MOTOR REAR GUARD MOTOR IMPACTOR SWITCH TO RELAY CONTACT IMPACTOR SWITCH TO RELAY CONTROL RELAY CONTACT TO DRAWBAR PRESSURE SWITCH TRIGGER SWITCH TO HOUR METER DRAWBAR PRESS. SW. TO RIPPER FRAME PRESS. SW. TRANSMISSION NEUTRALIZER SWITCH TO OVERRIDE SCRAPER TRANSMISSION GEAR CODE 6 SWITCH TO LOCKUP CLUTCH CONTROL ENABLE DUAL HP RELAY TO SWITCH ENGINE OVERSPEED LIGHT AND HORN ENGINE OVERSPEED TEST SWITCH BRAKE RETRACT BREAKER TO RELAY BRAKE RETRACT SWITCH TO RELAY COIL AUTO FIRE NITROGEN SW. TO NITROGEN SW. AUTO FIRE AGENT SWITCH TO AGENT SWITCH AUTO FIRE AGENT SW. TO NITROGEN SW.
Printed in U.S.A.
© 1988 Caterpillar All Rights Reserved
Connectors
Ident.
1 10 CONTACTS
2 3
9 CONTACTS
4 5
8 CONTACTS
6 7
7 CONTACTS 6 CONTACTS
8 9 10
5 CONTACTS
11 12 4 CONTACTS
13 14
Harness And/Or Components A - 9R0896 K - 9R0893 E - 9R0889 H - 9R0892 E - 9R0889 L - 9R0890 E - 9R0889 H - 9R0892 B - 9R2148 E - 9R0889 B - 9R2148 GG - 9R2149 D - 9R0802 E - 9R0889 E - 9R0889 G - 9R0887 D - 9R0802 E - 9R0889 GG - 9R2149 Head/Position Turn Lamp GG - 9R2149 MM - 9R2537 A - 9R0896 Front Wiper Motor A - 9R0896 Rear Wiper Motor B - 9R2148 NN - *
* For the 428 and 438 use 9R2384. For the 416, 426 and 436 use 9R5214.
Schematic Location
A - COMPONENTS IN OPERATOR COMPARTMENT B - COMPONENTS IN OPERATOR COMPARTMENT - RELAY PANEL
B-8
Ident. 1
B-7
A
E-3
Schematic Components
Location
Ident.
Schematic Components
Location
Alarm - Backup
B-9
15
Solenoid - Front - Drive
Alarm - Fault
C-3
16
Solenoid - Start Aid
F-2
2
Alternator
C-1
17
Solenoid - Transmission Neutralizer
C-2
C-2
Circuit Number
Color
424 425 426 427
GY PK BR GN
428 429 430 431 432 433 434 435 436
OR YL BU GN PK BU BU YL OR
3
Batteries
F-5
A
Speedometer
D-4
B
Breaker - Alternator
C-8
B
Switch - Head/Front Lamp
D-7
B
Breaker - Running Lamp
C-8
18
Switch - Backup Alarm
D-3
A
Flasher
C-9
B
Switch - Beacon
D-7
B
Fuse Block
C-8
A
Switch - Blower and Air Conditioner
E-3
437
BR
B
Gauge - Converter Temperature
D-8
19
Switch - Bucket Positioner
A-1
B
Gauge - Coolant Temperature
D-8
20
Switch - Coolant Temperature
C-2
B
Gauge - Fuel
D-9
21
Switch - Coolant Temperature (Start Aid)
C-1
B
Gauge - Tachometer
D-9
A
Switch - Dimmer
E-4
4
Horn - Forward
D-1
22
Switch - Engine Oil Pressure
D-1
B
Meter - Service
D-8
A
Switch - Forward Horn
C-4
B
Meter - Volt
D-8
B
Switch - Front Drive
C-6
A
Motor - Blower
D-3
B
Switch - Front Wiper
C-6
A
Motor - Fan
E-7
B
Switch - Hazard
D-7
A
Motor - Front Wiper
D-3
B
Switch - Key Start
D-8
A
Motor - Rear Wiper
E-9
A
Switch - Lamp Test
C-4
E-4
5
Motor - Starter
E-2
23
Switch - Neutral/Start
C-2
6
Motor - Windshield Washer
F-4
24
Switch - Parking Brake
B-7
D-3
B
Relay - Main
C-7
25
Switch - Parking Brake Neutral
C-2
B
Relay - Start
C-7
B
Switch - Rear Flood Lamp
D-7
7
Resistor - Alternator Field
D-7
B
Switch - Rear Wiper
C-6
A
Resistor - Blower Motor Speed
D-3
26
Switch - Refrigerant
F-1
8
Sender - Converter
C-2
B
Switch - Running Lamp
D-6
438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 456 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 483 484 485 A400 A402 A417
YL YL BR OR GY YL BU GN PU PK WH BU YL BR PU PK GN YL BR PU PK PK BU OR YL YL GY OR WH WH YL GN PU PK OR GY WH BR BU YL GY BU PK GN BR YL YL PK BU WH
500 501 502 503 504 505 506 507 508 509 510 511 512 513
BR GN OR BR YL BU PU WH PU WH YL BR GN OR
514 515 516 517 518 519 520
PU GY GN BU OR PK WH
521 522 523
YL WH BR
B-7 A-8 E-2 B-4 A-7 C-4 A-2, F-3
E-9 A-9, F-9
9
Sender - Coolant Temperature
C-1
B
Switch - Start Aid
D-7
10
Sender - Fuel
A-6
A
Switch - Thermostat
C-3
11
Sender - Speedometer
C-2
A
Switch - Turn Signal
E-4
12
Solenoid - Air Conditioner Clutch
D-1
A
Switch - Wiper Disconnect
E-8
13
Solenoid - Bucket Positioner
A-4
27
Switches - Brake {Stop Light)
D-4
14
Solenoid - Engine Shutdown
D-2
A
Switches - Transmission Neutralizer
Part No.
Function
8N1693
Engine Coolant Temp. (Start Aid)
6T1546
Engine Oil Pressure (EMS) Fuel Pressure (EMS)
6T2665
Engine Coolant Temperature
6T4949
Engine Oil Pressure (EMS) Engine Oil Pressure (S.Meter)
N.O. = NORMALLY OPEN
Switch Specifications
N.C. = NORMALLY CLOSED
Actuate
37.8 ± 2.8°C (100 ± 5°F) 93 ± 21 kPa (13.5 ± 3.0 psi) 107.2 ± 2.8°C (225 ± 5°F) 93 ± 21 kPa (13.5 ± 3.0 psi)
Deactuate
26.7°C MIN (80°F MIN) 69 ± 21 kPa (10.0 ± 3.0 psi) 93°C min. (196°F) 69 ± 21 kPa (10.0 ± 3.0 psi)
D-6, D-4
Normal Condition N.C. N.O. N.O. N.O.
C14611X1
Description MONITORING CIRCUITS (CONT.) OPERATOR MON PANEL POWER TRAIN TEMP OPERATOR MON PANEL POWER TRAIN OIL LEVEL OPERATOR MON PANEL POWER TRAIN OIL FILTER OPERATOR MON PANEL POWER TRAIN OIL FILTER JUMPER OPERATOR MON PANEL TRANSMISSION OIL TEMP OPERATOR MON PANEL BRAKE OIL TEMP OPERATOR MON PANEL AIR FILTER OPERATOR MON PANEL LOW TRANSFER PUMP PRESS. OPERATOR MON PANEL BRAKE PRESS. (OIL) OPERATOR MON PANEL BRAKE PRESS. (OIL) JUMPER OPERATOR MON PANEL POWER TRAIN TEMP JUMPER OPERATOR MON PANEL POWER TRAIN TEMP JUMPER OPERATOR MON PANEL POWER TRAIN OIL FILTER JUMPER OPERATOR MON PANEL FUEL LEVEL TO FUEL FILTER JUMPER OPERATOR MON PANEL COOLANT TEMP JUMPER LAMP INDICATOR AIR PRESSURE GAUGE ENGINE COOLANT TEMP GAUGE HYDRAULIC SYSTEM TEMP GAUGE POWER TRAIN TEMP GAUGE CONV/RETARDER OIL TEMP GAUGE (TRACTOR) CONV/RETARDER OIL TEMP GAUGE (SCRAPER) BRAKE OIL TEMPERATURE GAUGE FUEL LEVEL GAUGE AIR PRESSURE GAUGE SPEEDOMETER SENDER (SIGNAL NO. 1) TACHOMETER SENDER (+) TACHOMETER SENDER (-) TORQUE CONVERTER SECONDARY STEERING FAULT LAMP RETARDER INDICATOR LAMP CONVERTER TEMP SW. TO TIME DELAY MONITOR PANEL PTO MONITOR PANEL GROUND SPEED SENDER MONITOR PANEL +V MONITOR PANEL IMPLEMENT POSITION MONITOR PANEL PROGRAM PIN OPERATOR PANEL BRAKE AIR PRESS. JUMPER STEERING MOTOR INDICATOR SENSOR PRESENT MONITOR PANEL ENGINE OIL PRESSURE SENSOR LOW CHARGE PRESSURE WARNING MONITOR PANEL STEERING OIL TEMPERATURE SYSTEM FAULT (HYDRST) BRAKE OIL CIRCULATION JUMPER FUEL LEVEL SENDER B+ CANE SWITCH NEUTRAL TRANSMISSION NEUTRAL TO PARKING BRAKE PARKING BRAKE SW TO OVERSTROKE SW. OVERSTROKE SW. TO OVERSTROKE SW. OVERSTROKE SW. TO OVERSTROKE SW. OVERSTROKE SW. TO TRAILING UNIT CONTROL LEVER LOCK INDICATOR SPEEDOMETER SENDER (SIGNAL NO. 2) PRESS. SW. TO RED LAMP-IMPACT RIPPER PRESS. SW. TO GREEN LAMP-IMPACT RIPPER NEUTRAL-CST TO AWD CONV TEMP SW. TO BRAKE OIL TEMP SW. BRAKE FLUID LEVEL PRIMARY STEERING LAMP OPERATOR MON PANEL ALL WHEEL DRIVE FAULT FUEL PRESSURE SENDER COOLANT PRESSURE SENDER EMS SCRAPER TRANSMISSION ACCESSORY CIRCUITS WINDSHIELD WIPER - FRONT (PARK) WINDSHIELD WIPER - FRONT (LOW) WINDSHIELD WIPER - FRONT (HIGH) WINDSHIELD WIPER - REAR (PARK) WINDSHIELD WIPER - REAR (LOW) WINDSHIELD WIPER - REAR (HIGH) WINDSHIELD WASHER - FRONT WINDSHIELD WASHER - REAR RADIO SPEAKER-LEFT RADIO SPEAKER-LEFT (COMMON) WINDSHIELD WASHER-PRIMER RADIO SPEAKER-RIGHT RADIO SPEAKER-RIGHT (COMMON) AIR CONDITIONER COMPRESSOR/REFRIGERANT PRESS. SW. AIR CONDITIONER CONDENSER MOTOR BLOWER MOTOR (HIGH) BLOWER MOTOR (MEDIUM) BLOWER MOTOR (LOW) HAZARD FLASHER TO SWITCH THERMOSTAT TO REFRIGERANT PRESS. SW. OPERATOR AIR CONDITIONER SWITCH TO THERMOSTAT/FUSE AIR COND SW. TO REFRIGERANT SWITCH AIR COND CLUTCH TO THERMOSTAT SW. WINDSHIELD WIPER-LEFT (PARK)
Circuit Number
Color
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586
BU GY YL GN PK WH OR WH WH OR WH BU WH GR BR BU WH GN BU BR RD BU BU OR GY PK OR YL WH YL PK OR WH YL GN YL GN BU YL PU GY PU YL WH GN PK BU OR PU GN WH YL PK PU BU BR OR GY PK OR YL YL BR
600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629
BR GY WH PK OR YL GY PK GN YL OR PU GY PK PU YL BU BR YL GR WH GY PU BU YL BK BU YL PK PK
Description ACCESSORY CIRCUITS (CONT.) WINDSHIELD WIPER-LEFT (LOW) WINDSHIELD WIPER-LEFT (HIGH) WINDSHIELD WIPER-RIGHT (PARK) WINDSHIELD WIPER-RIGHT (LOW) WINDSHIELD WIPER-RIGHT (HIGH) WINDSHIELD WASHER-LEFT WINDSHIELD WASHER-RIGHT FIRE WARNING HORN FIRE WARNING LAMP HEAT SENSOR/TEST SW. HEAT SENSOR/TEST SW. WINDSHIELD SW. TO WIPER SW. HAZARD SWITCH TO TURN SWITCH TURN SIGNAL SW. TO FLASHER HAZARD INDICATOR TURN SIGNAL INDICATOR BASIC/RIGHT TURN SIGNAL INDICATOR LEFT ACCESSORY 1 ACCESSORY 2 TRAILER CONNECTOR (TAIL LAMP) TRAILER CONNECTOR (STOP LAMP) TOGGLE SW. TO BUTTON:MOMENTARY TILT ENABLE AUX HYDRAULIC-ROTATE CLOCKWISE AUX HYDRAULIC-ROTATE COUNTER-CLOCKWISE AUX HYDRAULIC-OPEN AUX HYDRAULIC-CLOSE AUX HYDRAULIC LEFT-DISCONNECT TO SW. AUX HYDRAULIC RIGHT-DISCONNECT TO SW. FOUR WHEEL DRIVE SOLENOID PITCH SOLENOID TO TRIGGER SW.-DUAL TILT MOMENTARY SW. TO SINGLE TILT SOL.-DUAL TILT TRIGGER SW. TO TOGGLE-DUAL TILT DIFFERENTIAL LOCK TRAILER CONNECTOR (LEFT TURN/HAZARD) TRAILER CONNECTOR (RIGHT TURN/HAZARD) AUTOLUBE SOLENOID HALON PRESS. SW./HALON PRESS. SW. HALON PRESS. SW./NITROGEN PRESS. SW. NITROGEN PRESS. SW./NITROGEN PRESS. SW. NITROGEN PRESS. SW./ FIRE MONITOR REAR WIPER INTERRUPT SW. TO WIPER SW. TOGGLE SW. TO BUTTON:MOMENTARY TILT DISABLE CONDENSER RELAY COIL TO THERMOSTAT SW. A/C SWITCH JUMPER WARNING BUZZER TO DIODES A/C SWITCH JUMPER NO.2 BLADE CUSHION SOLENOID DOZER FLOAT SOLENOID/BUCKET BLADE FLOAT LIMIT SW. NO.1 BLADE FLOAT LIMIT SW. NO.2 BLADE FLOAT SOLENOID WINDSHIELD WIPER-AUX (PARK) WINDSHIELD WIPER-AUX (LOW) WINDSHIELD WIPER-AUX (HIGH) WINDSHIELD WASHER-AUX A/C BLOWER MOTOR NO.1 A/C BLOWER MOTOR NO.2 LEFT REAR TURN/HAZARD RIGHT REAR TURN/HAZARD A/C BLOWER TO BLOWER BREAKER WIPER SWITCH JUMPER AUX HYDRAULIC-OPEN AUX HYDRAULIC-CLOSE LIGHTING CIRCUITS DASH BASIC DASH HIGH DOME LAMP ROTARY BEACON STOP LAMP TURN-LEFT TURN-RIGHT FLOOD-FRONT FLOOD-REAR FLOOD-SIDE HEAD LAMP BASIC HEAD LAMP HIGH BACKUP LICENSE PLATE PARK/TAIL/DASH CAB FLOOD/ROPS BUCKET FLOOD/BOOM FLOOD TAIL/POSITION LAMP-LEFT (ROADING PACKAGE) TAIL/POSITION LAMP-RIGHT (ROADING PACKAGE) HEAD LAMP LOW FLOOD-FRONT (ENGINE FLOOD LAMP) FLOODLAMP INDICATOR LAMP FLOODLAMP 3 WAY SWITCH JUMPER FLOODLAMP 3 WAY SWITCH JUMPER FLOODLAMP BOWL COURTESY LAMP DASH DIMMER FOG LAMP RIGHT TURN DASH INDICATOR AUX HEAD LAMP
Circuit Number
Color
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 156 157 158 159 160 161 162 163 165 167 168 169 170 171 172 173 174 175 176 176 177 178 180 181 182
RD BU YL YL BR WH WH BU OR GN YL PU OR GN PK BR YL GY PK YL YL BU WH GN OR PK OR PK BU GN BR PK OR PK BU GN OR GN OR BU PK BU BK GN BU GY PU WH PU OR GN BU WH WH YL YL BR BU PU PK YL WH YL OR GN PK YL GN GN YL PK PK YL OR OR GN GN GY PU
200 201 202 203 204 205 206 207 208 209 210 211 212 213
BK BK BK BK BK BK BK BK BK BK BK BK BK BK
C14610X1
Description POWER DISTRIBUTION CIRCUITS
BATTERY HEAD LAMP DOME/DASH LAMP/PARK, TAIL LAMP TORQUE CONVERTER SWITCH KEY SWITCH MAIN POWER RELAY/INPUT ENGINE SHUT DOWN/AUTO FIRE CONTROL MISC WIPER, DOME LAMP, CIGAR LIGHTER ALTERNATOR WINDSHIELD WIPER SW. (RIGHT) WINDSHIELD WIPER SW. (LEFT) MAIN POWER RELAY/OUTPUT OPERATOR MONITOR PANEL WARNING HORN (FORWARD) FLOOD LAMP (FRONT) FLOOD LAMP (REAR)-(SIDE ON D8,D9,D1 O,D11) FLOOD LAMP (SIDE) WINDSHIELD WIPER SW. (FRONT) WINDSHIELD WIPER SW. (REAR) CONVERTER (24 V to 12 V) BACKUP ALARM/LAMP AIR DRYER GAUGES (SERVICE METER, TORQUE CONV SOLENOID) AIR CONDITIONER FUEL TRANSFER PUMP TRANSMISSION CONTROL CAB FLOOD LAMP KICKOUT SOLENOID SW. CIGAR LIGHTER STOP LAMP AUX FLOODS FIRE CONTROL-OPERATOR WARNING ANTISPIN CONTROL MAIN POWER RELAY DIAG RES TO DIAGNOSTIC PROGRAMMED ELECTRONIC ENG CONT LOGIC AM/FM RADIO SUPPLEMENTAL STEERING STEERING MOTOR FUSE-SMALL TRUCKS AUTOMATIC LUBE PUMP/PAYLOAD MONITOR BRAKE RELEASE RELAY BRAKE RELEASE SWITCH AUXILIARY HEATER/DEFROSTER (FRONT) FAST DUMP SOLENOID TRANSMISSION DISCONNECT SWITCH FOG LAMP/BEACON DUAL HP SOLENOID SWITCH ACCESSORY SWITCH 1 ACCESSORY SWITCH 2 A/C SWITCH FLOODLAMP (FRONT ATTACHMENT) FLOODLAMP (REAR ATTACHMENT) DEFROSTER AUX. WIPER SWITCH 3 PT. HITCH CONTROL AIR CONDITIONER CB RADIO TURN FUSE TO HAZARD SWITCH B+ TO CONDENSER RELAY CONTACT WIPER MOTOR-RIGHT WIPER MOTOR-LEFT HAZARD FUSE TO HAZARD SWITCH AUXILIARY HYDRAULIC LEFT AUXILIARY HYDRAULIC RIGHT/SWING DIFFERENTIAL LOCK/APRON SOLENOID LOCKUP CLUTCH REFUELING PUMP BLADE CUSHION BLADE FLOAT DOZER FLOAT HAZARD FUSE TO FLASHER TURN FUSE TO FLASHER CUSTOMER ADD-ONS TRAILER TURN/HAZARD CUSTOMER ADD-ONS CRANKCASE GUARD - PUMP MOTOR MAIN BREAKER MAIN BREAKER DUAL H.P. BREAKER ENGINE SPEED CONTROL- +BATTERY ENGINE UNDERSPEED CONTROL GROUND CIRCUITS MAIN CHASSIS OPERATOR MONITOR PANEL TRANSMISSION CONTROL CHASSIS DIAGNOSTIC OPERATOR MONITOR PANEL (SCRAPER) INSTRUMENT BATTERY SIDE OF DISCONNECT STARTER DIAGNOSTIC TRAILER CONNECTOR (GROUND) FIRE SUPPRESSION SYSTEM CONVERTER OUTPUT (24/12 VOLT) DISCONNECT DIAGNOSTIC RESISTOR ANTISPIN CODING PIN 16 ANTISPIN CODING PIN 17
Circuit Number
Color
214 215 216 217 218 219 220 221 222 223 224 226 227 228 230 231 232 233 234 236 240 241 242 243 244 250 251 252 256 257 258 259 260 261 262 263
BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK
301 302 304 305 306 307 308 309 310 311 312 313 314 315 316 317 320 321 322 323 324 325 326 327 328 329 330 331 332 333
BU OR WH BU GN OR YL GY PU WH PK GY PU GN PK YL OR BR GY WH BU PK PU PK OR YL YL OR BU GN
400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
GN BU YL GN YL GY PU PK WH OR WH PK BU BR PK GN OR GY WH YL OR
421 422 423
BU YL PU
Description GROUND CIRCUITS (CONT.) ANTISPIN CODING PIN 18 ANTISPIN CODING PIN 19 ANTISPIN CODING PIN 20 TRANSMISSION CODING PIN 17 TRANSMISSION CODING PIN 18 TRANSMISSION CODING PIN 19 ENGINE OIL PRESSURE SENSOR ENGINE COOLANT TEMP SENSOR MONITOR PANEL CODING 1 MONITOR PANEL CODING 2 ENGLISH/METRIC CODING HYD OIL TEMP SENSOR TRANSMISSION CODING PIN 37 FUEL LEVEL SENDER TMC ACTUATOR GROUND TRANSMISSION SWITCH ENGINE SPEED CONTROL SOLENOID GROUND ENGINE UNDERSPEED CONTROL-PROPORTIONAL SOL ENGINE SPEED CONTROL SOLENOID GROUND TRANSMISSION CODING PIN 36 ENGINE SPEED CONTROL OPERATOR MON PANEL TIME DELAY PIN 3 OPERATOR MON PANEL TIME DELAY PIN 4 OPERATOR MON PANEL TIME DELAY PIN 5 OPERATOR MON PANEL TIME DELAY PIN 6 PAYLOAD MONITOR-CUSTOMER GROUND PAYLOAD MONITOR-SYSTEM GROUND PAYLOAD MONITOR-DISPLAY TO CONTROL LUC HARNESS CODE 0 LUC HARNESS CODE 1 LUC HARNESS CODE 2 LUC HARNESS CODE 3 TECH ID CODE 0 TECH ID CODE 1 TECH ID CODE 2 TECH ID CODE 3 MACHINE BASIC CIRCUITS STARTER NO.1 SOLENOID TO RESISTOR STARTER NO.1 RESISTOR TO DIAGNOSTIC STARTER RELAY NO.1 OUTPUT KEY SWITCH TO ALARM HORN STARTER RELAY COIL/NEUTRAL START SW. OR KEY SW. KEY SW. TO NEUTRAL START SW. MAIN POWER RELAY COIL ALTERNATOR REGULATOR TERM ETHER SW. TO ETHER SOLENOID ETHER SOLENOID TO TEMPERATURE SW. STARTER NO.2 SOLENOID TO RESISTOR STARTER NO.2 RESISTOR TO DIAGNOSTIC STARTER RELAY NO.2 OUTPUT START AID BREAKER TO START AID RELAY CANE TO ELEVATOR NEUTRAL START SW. JUMPER START AID RELAY TO START AID SOLENOID HORN RELAY COIL TO SWITCH BACKUP ALARM/LAMP/TRAVEL ALARM WARNING HORN (FORWARD) FUEL TRANSFER PUMP POWER DIFFERENTIAL LOCKUP SOLENOID FUEL PUMP RELAY OIL PRESSURE SW. KEY SWITCH "C" TERMINAL SHUTDOWN SOLENOID SHUTDOWN MODULE "OFF" FUEL PUMP TO SWITCH NEUTRAL START RELAY COIL BACK-UP ALARM RELAY COIL SHUTDOWN SWITCH TO SHUTDOWN CONTROL SCRAPER KEY SW. "R" TERMINAL MONITORING CIRCUITS SERVICE METER SWITCH HYD OIL TEMP GAUGE SENSOR B+ COOLANT TEMP GAUGE SENSOR B+ ALTERNATOR (R) TERMINAL OPERATOR MON PANEL HYDRAULIC OIL TEMP OPERATOR MON PANEL OIL PRESS. (LOW SETTING) OPERATOR MON PANEL COOLANT TEMP OPERATOR MON PANEL CONV/RETARDER OIL TEMP OPERATOR MON PANEL BRAKE PRESS. (AIR) OPERATOR MON PANEL NEUTRAL OPERATOR MON PANEL FAULT ALARM OPERATOR MON PANEL MASTER FAULT LAMP OPERATOR MON PANEL COOLANT FLOW OPERATOR MON PANEL FUEL PRESS. OPERATOR MON PANEL LOW FUEL OPERATOR MON PANEL TEST SW. SECONDARY STEERING SW. PRIMARY STEERING SW. OPERATOR MON PANEL OIL PRESS. (HIGH SETTING) OPERATOR MON PANEL PARKING BRAKE OPERATOR MON PANEL FUEL FILTER/LOW ACCUM PRESS. OPERATOR MON PANEL FAULT LAMP (SCRAPER) OPERATOR MON PANEL WARNING HORN (SCRAPER) OPERATOR MON PANEL TEST SW. (SCRAPER)