345B EXCAVATOR ELECTRICAL SYSTEM SCHEMATIC USED IN SERVICE MANUAL RENR1900 GOSSELIES

RENR1913-01
April 2000
345B Excavator
Electrical System
7KS1-UP
2SW1-UP
BFG1-UP
©
2000 Caterpillar
All Rights Reserved
Printed in U.S.A.
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 A-11 16
CONN 2 B-11 26
CONN 3 C-11 26
CONN 4 C-11 26
CONN 5 C-11 26
CONN 6 C-11 26
CONN 7 F-10 D
CONN 8 F-10 D
CONN 9 F-10 D
CONN 10 G-10 D
CONN 11 G-10 D
CONN 12 D-9 D
CONN 13 E-9 D
CONN 14 E-9 D
CONN 15 E-8 D
CONN 16 F-9 D
CONN 17 Service G-8 D
CONN 18 I-7 14
CONN 19 C-6 7
CONN 20 C-6 7
CONN 21 C-5 7
CONN 22 C-5 7
CONN 23 C-5 F
CONN 24 C-4 F
CONN 25 C-4 F
CONN 26 F-5 C
CONN 27 F-5 C
CONN 28 F-5 C
CONN 29 F-5 C
CONN 30 F-5 C
CONN 31 F-4 C
CONN 32 F-4 C
CONN 33 H-6 F
CONN 34 H-6 F
CONN 35 H-6 F
CONN 36 H-6 F
CONN 37 H-6 14
CONN 38 H-6 14
CONN 39 H-6 14
CONN 40 H-6 14
CONN 41 H-6 14
CONN 42 H-5 B
CONN 43 H-4 B
CONN 44 H-4 B
CONN 45 H-4 B
CONN 46 H-4 B
CONN 47 H-3 B
CONN 48 H-3 B
CONN 49 H-3 B
CONN 50 H-3 B
CONN 51 I-5 E
CONN 52 I-5 E
CONN 53 A-3 6
CONN 54 B-2 14
CONN 55 B-2 30
CONN 56 C-2 F
CONN 57 C-2 F
CONN 58 C-2 F
CONN 59 D-2 D
CONN 60 A-3, B-3 33
CONN 61 A-4 28
CONN 62 A-4 20
CONN 63 A-3 20
CONN 64 I-12 34
CONN 65 Factory Adjustment D-2 F
The connectors shown in this chart are for harness to harness connectors.
Connectors that join a harness to a component are generally located at or near the
component. See the Component Location Chart.
A
3
5
6
8
9
10
11
12
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
35
33
34
7
F
A
3
4
5
6
7
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
31
32
35
33
34
7
F
Machine Harness Connector And Component Locations
E96828
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Alarm - Travel C-7 1 Sensor - Fuel Temperature B-10 21
Alternator E-12 2 Sensor - Intake Manifold Air Temperature B-10 17
Alternator (Artic Pkg) B-10 2 Sensor - O.W.D B-2 8
Assembly - Buzzer H-5 35 Sensor - Oil Pressure B-10 18
Assembly - Terminal Block E-9 D Sensor - Pump Discharge Press B-7 19
Batteries - 12VDC G-11 3 Sensor - Speed/Timing B-10 18
Breaker - Alternator G-9 D Solenoid - A/C Clutch E-11 22
Breaker - Main G-8 D Solenoid - AC1 I-8 14
Breaker - Fuel Heater H-12 3 Solenoid - AC2 I-8 14
Braeker - Warming Windshield G-11 3 Solenoid - Eng/Pump Control A-7 4
Control - Aux Hyd I-9 4 Solenoid - Flow Control I-8 14
Control - Engine A-12 5 Solenoid - Hammer 2 I-6 14
Control - Engine/Pump F-2 C Solenoid - High Pressure (A2) B-2 32
Control - O.W.D. H-5 A Solenoid - High Pressure (A3) B-2 32
Controller - Wiper/Washer D-1 E Solenoid - Hydraulic Lock H-1 F
Converter - Voltage B-6 A Solenoid - Level Finish A-7 4
Diode - Main Relay F-8 D Solenoid - Low Pressure (A1) B-2 32
Diode - Refueling A-2 6 Solenoid - Pedal ON/OFF H-1 F
Fuses I-4,5 B Solenoid - R1/R2 I-7 14
Ground - Cab B-5 7 Solenoid - Start Aid F-12 23
Ground - Cab E-1 E Solenoid - Swing Brake B-7 14
Ground - Chassis B-3 8 Solenoid - Travel Speed A-7 4
Ground - Chassis D-12 9 Solenoid - Trenching A-7 4
Ground - Chassis I-10 D Solenoids - Injector A-11 24
Ground - Engine Control C-11 5 Switch - Air Cleaner Flow F-12 25
Ground - Platform H-1 F Switch - Aux D-3 C
Ground - Platform H-2 F Switch - Aux D-3 C
Ground - Relay Panel D-8 D Switch - Aux Pressure I-7 B
Ground Strap - Chassis to Platform G-6 10 Switch - Backup D-2 C
Horn A-2 8 Switch - Backup EPR Valve D-5 C
Indicator C-5 A Switch - Backup THRT D-6 C
Lighter E-1 E Switch - Boom Raise Pressure C-7 C
Meter - Service F-1 E Switch - Coolant Level F-12 23
Monitor F-1 E Switch - Disconnect G-9 D
Motor - Lower Wiper G-1 11 Switch - Engine Oil Level D-11 26
Motor - Starter D-12 9 Switch - Horn H-5 B
Motor - Starter (Artic Pkg) A-10 9 Switch - Hyd Tank Press A-5 27
Motor - Upper Wiper B-6 12 Switch - Hydraulic Control D-4 C
Motor - Washer H-12 D Switch - Hydraulic Oil Filter A-5 15
Pump - Auto Lube F-12 13 Switch - Hydraulic Oil Level A-5 15
Pump - BIO F-12 14 Switch - Implement Pressure C-7 14
Pump - Refueling A-3 6 Switch - Key E-2 C
Radio - 12VDC I-3 A Switch - LH Foot Pedal I-5 A
Relay - Boom Lamp F-7 D Switch - Neutral Start Limit H-5 B
Relay - Cab/Chassis Lamp E-7 D Switch - O.W.D. D-5 C
Relay - Fuel Heater H-12 3 Switch - Off Heater H-12 3
Relay - Horn G-7 D Switch - On Heater H-12 3
Relay - Hydraulic Lock Solenoid F-7 D Switch - On/Off Fuel Heater H-11 3
Relay - Main F-8 D Switch - One Touch Low Idle F-2 C
Relay - Neutral Start E-7 D Switch - Pressure I-7 14
Relay - Refueling Power A-3 6 Switch - Proximity I-7 14
Relay - Refueling Start A-2 6 Switch - Refrigerant Low Press E-11 23
Relay - Refueling Stop A-2 6 Switch - Refueling Level A-4 28
Relay - Start F-8 D Switch - Refueling Pump(NC) A-4 6
Relay - Start Disable H-11 3 Switch - Refueling Pump(NO) A-3 6
Relay - Start Heater H-11 3 Switch - RH Foot Pedal I-5 A
Relay - Timer D-7 D Switch - Rotary H-3 31
Relay - Warming Windshield G-11 3 Switch - Seat Heater D-4 C
Resistor - Backup G-8 D Switch - Start Aid D-5 C
Sender - Hydraulic Oil Temp A-5 15 Switch - Start Aid Coolant Temp E-11 18
Sensor - A/C Photo F-1 E Switch - Suction Line Shutoff Limit A-7 15
Sensor - ATM Pressure B-10 16 Switch - Throttle Position E-2 C
Sensor - Boost Pressure B-10 17 Switch - Travel Pressure C-7 14
Sensor - Coolant Temperature B-10 18 Switch Panel F-2 C
Sensor - Engine Speed Pickup D-11 19 Unit - A/C H-3 29
Sensor - Fuel Level A-4 20
Machine locations are repeated for components located close together. D = Located around relay panel.
A = Located inside of cab. E = Located around hydraulic oil tank.
B = Located inside of right console. F = Located around pilot manifold.
C = Located inside of left console. G =Located under platform.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits Accessory Circuits (Continued)
101 RD Bat (+) (Not Application Specific) C537 GN A/C Photo Sensor + Sig
103 RD Aux Ckt C538 OR A/C Photo Sensor - Sig
105 RD Key Start Sw
Lighting Circuits
109 RD Alt Output (+) Term. 607 PK Flood Lamps - Front
110 RD Aux Ckt 615 YL Cab Flood Lamp/Rops
111 RD Aux Ckt 616 BU Boom Flood Lamp
112 PU Main Power Rly Output 633 BU DC/DC Converter
113 OR Opr Mon Panel B (+) Switched 638 WH Rotating Beacon
114 GN Warning Horn (Forward)
Control Circuits
115 PK Cab Chassis Lamp Relay 763 BU Torque Converter Sw
118 GY Washer/Wiper 786 RD Engine Speed Cont
120 YL Converter 788 YL Engine Speed (+)
124 GN A/C 791 PK Engine Speed Cont
129 BU Cigar Lighter A701 GY Injector #1
135 BU Converter/ Atch AM-FM Radio A702 PU Injector #2
139 OR Converter/ Atch AM-FM Radio A703 BR Injector #3
140 BU Lubricator A704 GN Injector #4
147 PU Aux Ckt A705 BU Injector #5
149 PU Boom Lamp A706 GY Injector #6
150 RD Bat (+) A746 PK Turbo Outlet Pressure
151 GN Neutral Start Sw to Hyd Lock Sol Rly A747 GY Atmospheric Pressure
152 BU Aux Ckt A751 YL After Cooler Temp
154 RD Neutral Start Sw to Neutral Start Rly A755 PK Throttle Sw #1
168 RD Refueling Pump A756 BU Throttle Sw #2
175 PK Aux Ckt A756 PU Throttle Sw #2
176 YL Aux Ckt A757 GY Throttle Sw #3
177 RD Main Brkr A757 WH Throttle Sw #3
180 GN Bio Pump A758 BR Throttle Sw #4
185 YL Backup EPR Valve Sw A762 PU Elec Pump Cont Eng Speed Ground
189 RD Timer Rly A768 BU Pump Control Valve #1 (+)
191 WH Aux Ckt A769 GY Pump Control Valve #2 (-)
196 BU Insp Lamp A770 PK Elec Pump Cont Bypass Sw
Ground Circuits
A771 PU Float Sw
201 BK Operator Monitor Return D789 WH Injector Common 1 & 2
210 BK Radio D790 OR Injector Common 3 & 4
235 BK Electronic Pump Ctrl Gnd D791 YL Injector Common 5 & 6
Basic Machine Circuits
E793 BU ATA Data Link (-)
304 WH Starter Relay No. 1 Output E794 YL ATA Data Link (+)
306 GN Starter Relay Coil To Neut Start SW Or F717 YL Sw 4
307 OR Key Start SW To Neutral Start SW Or F718 BU Sw 5
308 YL Main Power Relay Coil 892 BR CAT Data Link (-)
310 PU Start Aid SW To Start Aid Sol 893 GN CAT Data Link (+)
311 WH Start Aid Sol To Temp SW A847 YL Aux Hyd Controller
320 RD Horn Relay Coil To Sw A848 PK Aux Hyd Controller
321 BR Backup Alarm Lamp Travel Alarm A849 OR Aux Hyd Controller
322 GY Warning Horn (Forward) A850 WH Aux Hyd Controller
323 WH Fuel Pump Power F846 PU LED Driver 1
325 PK Fuel Pump Relay 950 BR Hammer Sw C
329 YL Fuel Pump To Sw 951 PK Hammer Sol C
330 YL Neutral Start Relay Coil 952 OR Aux Hyd Controller
365 YL Fuel Pump Relay To Sw 954 GN Hammer Sw A
386 PK Air Shutoff Solenoid Enable 955 BU Hammer Sw A
Monitoring Circuits
961 BR Aux Hyd Controller
403 GN Alternator (R) Term. 993 BR Analog Sensor Common
412 BU Operator Monitor Cool Flow 994 GY Oil Pressure (Filtered)
430 BU Operator Monitor Air Filter 995 BU Coolant Temperature
439 YL Lamp Indicator 996 GN Engine Speed/Timing Sensor Power
491 PK Hydraulic Oil Temp Sensor 997 OR Analog Sensor Power (+5V)
492 GY Coolant Temp Sensor 998 BR Digital Sensor Return
495 GN Fuel Level 999 WH Primary Camshaft Speed/Timing
496 WH Operator Monitor Panel Hyd Oil Level C912 GN Throttle Position
499 GY Operator Monitor Implement Oil Filter C967 BU Inlet Air Temperature
A424 WH Overload Warning Device K904 GN Pump Discharge - Signal
A425 YL Overload Warning Device K905 RD Pump Discharge - +B
A499 BU Operator Monitor Hydraulic Oil Press K906 GN Swing Brake Sol - Signal
C468 BU Engine oil Level K907 BU Swing Brake Sol - +B
E455 BR Hydraulic Oil Filter K909 BU Backup SW - +B
F400 GY Low Oil Pressure K911 PK E/P Controller - RS485 (+)
Accessory Circuits
K912 GN E/P Controller - RS485 (-)
500 BN Windshield Sw to Wiper Control K915 GN Fine Swing Sw - E/P Controller
501 GN Wiper - Front (Low) K973 BR Aux Hyd Controller
506 PU Washer - Front K974 PU Aux Hyd Controller
508 PU Radio Speaker - Left K975 WH Aux Hyd Controller
509 WH Radio Speaker - Left (Common) K976 OR Aux Hyd Controller
511 BR Radio Speaker - Right K997 BU (+) V Sensor
512 GN Radio Speaker - Right (Common) L908 OR Controller RS-232C TX
513 OR A/C Compressor/ Refrigerant Press Sw L909 BU Controller RS-232C RX
521 YL A/C SW To Refrigerant SW L968 OR Electronic Pump Control Ps Valve (-)
524 BU Wiper Motors L969 WH Electronic Pump Control Ps Valve (+)
546 BU Aux Hyd - Rotate CW L970 GY Elec Pump Cont To Sw Common Ret
547 OR Aux Hyd - Rotate CCW L971 GN Elec Pump Cont To Travel Press Sw
548 GY Aux Hyd - Open L972 BU Low Idle SW
549 PK Aux Hyd - Closed L973 GN Fine Swing Cont Relay To Sol Valve
575 YL Wiper - Aux L974 GN Elec Pump Ctrl Boom Raise Press SW
576 PK Wiper - Aux L976 GN Excavator Fuel Pump Switch
578 BU Washer - Aux L977 YL Trenching Sol
586 BR Aux Hydraulic - Close L978 GY Level Finish Sol
590 GY Wiper Sw To Intermittent Module N919 GN HEX Backup Engine Speed Control 1
A537 PK Seat Heater N920 BU HEX Backup Engine Speed Control 2
A586 OR Wiper SW To Wiper Cont N921 YL HEX Backup Engine Speed Control 3
A587 YL Power Window Cont To Safety Sol Relay N922 OR HEX Backup Engine Speed Control 4
A588 GN Safety Sol Relay To Sol N923 GY Backup Mode Sw 1
A587 YL Power Window Cont to Safety Sol Relay N924 WH Backup Mode Sw 2
A588 GN Safety Sol Relay to Sol 8630 BU Rotating Beacon
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
3E-6332 Solenoid: Valve - Start Aid 6.0
4I-5394 Sender: Hydraulic Oil Temp 6130 to 7500
102-8017 Resistor: Backup 52.0 ± 2.6
107-7056 Solenoid: Atch Fine Swing 34.0 ± 0.5
111-9916 Solenoid: Engine Pump Control 11.7 ± 1.2
121-1490 Solenoid: Level Finish 32.0 ± 3.2
Trenching
121-1491 Solenoid: AC1 32.0 ± 3.2
AC2
Hydraulic Lock
Swing Brake
Travel Speed
¹ At room temperature unless otherwise noted.
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
3E-6425 Coolant Temperature (Start Aid) 38 ± 3° C 27° C Min. Normally Closed
(100 ± 5° F) (80.6° F)
106-0179 Implement Pressure 1520 ± 98 kPa 1127 kPa MIN Normally Open
Travel Pressure (224.4 ± 14.21 psi) (163.5 psi MIN)
106-0180 Boom RaisePressure 2646.00 ± 196.00 kPa 2156.00 ± 196.00 kPa Normally Open
(383.77 ± 28.43 psi) (312.70 ± 28.43 psi)
106-0181 Aux Hydraulic Pressure 490 ± 49 kPa MAX 290 kPa MIN Normally Open
ATCH HammerPressure (71 ± 7 psi MAX) (42 psi MIN)
107-0615 Hydraulic Tank Pressure 48 ± 14 kPa 24 kPa MIN Normally Closed
(7.0 ± 2.0 psi) (3.5 psi MIN)
114-5333 Refrigerant Pressure (AC) 275 to 1750 kPa¹ -- Normally Open²
(40 to 255 psi) --
131-9203 Aux Hydraulic Pressure 3500 kPa MAX 3000 ± 150 kPa A-B Normally Open
(507.6 psi) (435.1 ±21.8 psi) A-C Normally Closed
¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kPa (405 psi), with decreasing pressure
the closed position can be maintained down to 170 kPa (25 psi).
² Contact position at the contacts of the harness connector.
CID Component
0001 Cylinder 1
0002 Cylinder 2
0003 Cylinder 3
0004 Cylinder 4
0005 Cylinder 5
0006 Cylinder 6
0100 Oil Pressure Signal
0110 Coolant Temperature Signal
0168 Electrical System Voltage
0172 Inlet Air Temperature Signal
0174 Fuel Temperature Signal
0190 Engine RPM Signal
0253 Personality Mode
0261 Timing Calibration
0262 Analog Sensor Supply
0268 Programmable Parameters
0273 Boost Pressure Signal
0274 Atmospheric Pressure Signal
0286 Oil Lamp
Component identifiers (CID¹) and Module Identifier (MID²)
¹ The CID is a diagnostic code that indicates which component is faulty.
² The MID is a diagnostic code that indicates which electronic control module
diagnosed the fault.
Failure Mode Identifiers (FMI)¹
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.
14 Parameter failures.
15 Parameter failures.
16 Parameter not available.
17 Module not responding.
18 Sensor supply fault.
19 Condition not met.
20 Parameter failures.
¹The FMI is a diagnostic code that indicates what type of failure has occurred.
Code Description of Problems
b101 Cylinder 1 open circuit.
b102 Cylinder 1 short.
b103 Cylinder 2 open circuit.
b104 Cylinder 2 short.
b105 Cylinder 3 open circuit.
b106 Cylinder 3 short.
b107 Cylinder 4 open circuit.
b108 Cylinder 4 short.
b109 Cylinder 5 open circuit.
b10A Cylinder 5 short.
b10b Cylinder 6 open circuit.
b10C Cylinder 6 short.
b10d Throttle switch inputs are incorrect.
b10E Oil pressure open/short to + battery.
b10F Oil pressure short to ground.
b110 Oil pressure calibration required.
b111 Coolant temperature open/short to + battery.
b112 Coolant temperature short to ground.
b113 Battery voltage above normal.
b114 Battery voltage below normal.
b115 Loss of engine rpm signal.
b116 Analog sensor supply short to + battery.
b117 Analog sensor supply short to ground.
b118 Digital sensor supply short to + battery.
b119 Digital sensor supply short to ground.
b11A Shutdown inputs are incorrect.
b11b Turbo out pressure open/short to + battery.
b11C Turbo out pressure short to ground.
b11d Turbo out pressure calibration required.
b11E Atmospheric pressure open/short to + battery.
b11F Atmospheric pressure short to ground.
b120 Atmospheric pressure calibration.
b121 Check programmable parameters.
b122 Timing calibration required.
b123 Hydraulic oil temperature open/short to + battery.
b124 Hydraulic oil temperature signal short to ground.
b200 ADEM unknown eror.
Engine Control Real Time Error Codes
Code Description of Problems
1301 Engine oil pressure is too low.
1302 Engine coolant temperature is too high.
1303 Hydraulic oil temperature is too high.
1304 Air filter is clogged.
1305 Battery voltage is not normal.
2201 Governor actuator feedback sensor circuit is open or shorted to battery voltage.
2202 Governor actuator feedback sensor circuit is shorted to body ground.
2301 Governor actuator feedback signal is not stable.
2302 Governor actuator feedback signal deviates.
2303 Governor actuator does not move.
2304 Calibration data error.
3201 Monitor RAM is not normal.
4101 Electric power supply to the controller is too much (43 volts).
4102 Over-current in proportional reducing valve.
4103 Proportional reducing valve circuit is open.
4104 Monitor power supply (digital output) over current.
4105 Over-current in digital output (trenching solenoid).
4106 Over-current in digital output (fine control solenoid).
4107 Over-current in digital output (travel speed change solenoid).
4108 Over-current in digital output (travel alarm).
4109 Spare solenoid 1 (digital output) over current.
410A Over-current in digital output (swing brake solenoid).
410B Spare solenoid 2 (digital output) over current.
4201 Engine speed is not normal.
4202 Engine coolant temperature sensor is shorted to body ground.
4203 Hydraulic oil temperature sensor is shorted to body ground.
4204 PWM sensor of pump delivery pressure is shorted to body ground.
4205 Spare PWM sensor 1 is shorted to body ground.
4206 Spare PWM sensor 2 is shorted to body ground.
4207 PWM sensor of pump delivery pressure is open in circuit.
420A Fuel sensor is shorted to body ground
420B Fuel sensor is open or shorted to battery voltage.
420C Electric power supply is to low (below 23 volts).
420D Electric power supply is to high (above 32 volts).
420E Engine speed dial is not in one of the 10 specified positions.
4301 Data mismatch 1 between alternator and speed sensor (alternator is abnormal).
4302 Data mismatch 2 between alternator and speed sensor (speed sensor is abnormal).
4303 Engine stalls.
A201 Monitor communication is not normal.
A202 Monitor takes too much time to respond to controller's signal.
A203 Communication is abnormal in controller.
A20D ADEM communication disconnect.
Real Time Error Codes
Related Electrical Service Manuals
Form Number
Alternator: 100-5047 SENR2082
Alternator Artic Package: 132-2156 SENR4757
Electric Starting Motor: 106-8553 SENR3581
Engine Control: RENR1235
Engine/Pump Control: 126-2973 RENR1999
Starting and Charging: SENR1936
Title
A AA
1
2
325-PK-14
200-BK-14
T
This indicates that the component does not have a wire connected to ground. It is
grounded by being fastened to the machine.
This indicates that the component has a wire connected to it that is connected to ground.
105-9344
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
The circle indicates that the component has screw terminals and a wire can be disconnected from it.
Pin
Socket
Fuse
Component
Part Number
Pin or Socket
Number
Receptacle
Plug
Wire Gauge
Wire, Cable, or Harness
Assembly Identification
Wire Color
Normally closed switch that will open with an increase of a specific condition.
No circle indicates that the wire cannot be disconnected from the component.
Single Wire
Connector
Circuit Number
Identification
Ground
Connection
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Circuit Breaker
Symbol
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.
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 Symbols
Electrical Schematic Symbols And Definitions
1
1
2
2
Typical representation of a Sure-Seal
connector. The plug and receptacle
contain both pins and sockets.
Typical representation of a Deutsch
connector. The plug contains all
sockets and the receptacle contains
all pins.
MOTOR
+
S
-
ATCH AUX CKT
ATCH
AM/FM RADIO
OPERATOR STATION
L14
L18
L3
L18
L3
L19
L21
L20
893-GN-18
L15
NEUTRAL START
LIMIT SW
111-4799
L15
HYD
LOCK SOL
121-1491
L19
A
J
L20
L21
147-PU-18
189-RD
403-GN-18
403-GN-18
C (NOTE E)
304-WH-8
154-RD-18
A
YY
VV
C
NOTE G
200-BK-14
ALT
R
B+
E
C (NOTE E)
NOTE G: NOT REQUIRED FOR ARCTIC PACKAGE
C (NOTE E)
B (NOTE E)
200-BK-14
3
1
154-RD-18
150-RD-18
4
2
MOTOR
CHASSIS
STARTER
MOTOR
106-8553
304-WH-8
G
S
MTR
BAT
101-RD-2
RD-00
RD-00
GROUND STRAP
128-8886
AA
EE(NOTE B)
B (NOTE E)
C (NOTE E)
ALTERNATOR
132-2156
109-RD-2
200-BK-2
101-RD-2
109-RD-2
200-BK-2
132-2156
(70A NOTE E)
200-BK-18
200-BK-2 (NOTE E)
109-RD-2 (NOTE E)
(NOTE E)
101-RD-2
(NOTE E)
(NOTE E)
151-GN-18
109-RD-4
150-RD-18
111-RD-14
109-RD-2
(NOTE E)
L22
189-RD
154-RD-18
101-RD-14
109-RD-2
(NOTE E)
101-RD-2
(NOTE E)
109-RD-2
(NOTE E)
101-RD-2
(NOTE E)
AF
AF
AF
AF
AFAF
AG
AH
AP
AF
AF
B
KK (NOTE E)
MM
(NOTE E)
103-6061 (NOTE E)
A
B
C
AG
AH
150-RD-18
NOTE E: USE WITH ARCTIC PACKAGE.
AG
AP
323-WH
323-WH
GROUND
FUEL PUMP
576-PK-18
152-BU-18
575-YL-18
L14
200-BK-18
200-BK-18
200-BK
FUEL PUMP
524-BU
111-RD-14
115-PK-14
118-GY
AUX PEDAL
ON/OFF SOL
A588-GN-18
575-YL-18
152-BU-18
576-PK-18
118-GY
524-BU
B
A
C
200-BK-18
1
2
A588-GN-18
N923-GY-18
2
1
A
LOWER WIPER
MOTOR
131-0398
200-BK-18
200-BK
549-PK-18
548-GY-18
952-OR-18
954-GN-18
112-PU-4
615-YL
200-BK-14
955-BU-18
A587-YL-18
F846-PU-18
G848-GN-18
L970-GY-18
115-PK-14
L25
ATCH HEATER GP
136-9001 (NOTE E)
L25
L19
L20
L3
L19
L20
L18
L21
L22
L18
L3
L19
L21
L20
L22
K905-RD-14
111-RD-14
150-RD-18
154-RD-18
189-RD
147-PU-18
115-PK-14
892-BR-18
PLATFORM
A
N923-GY-14
L15
154-RD-18
K905-RD-14
115-PK-14
N923-GY-18
N923-GY-18
150-RD-18
150-RD-18
K905-RD-14
198-PK-18
112-PU-14
1
2
5
4
3
6
151-GN-18
J
A
175-PK-14
147-PU-18
9
103-RD
8
200-BK
103-RD
A
PLATFORM
ANTENNA
106-0036
120-YL
152-BU
198-PK-18
198-PK-18
152-BU
152-BU
152-BU
198-PK-18
198-PK-18
C912-GN-18
198-PK-18
198-PK-18
177-RD-14
308-YL-18
200-BK-18
177-RD-14
177-RD-14
109-RD-6
151-GN-18
322-GY
A770-PK-18
K909-BU-18
K909-BU-18
177-RD-14
177-RD-14
177-RD-14
786-GN-18
149-PU
616-BU
322-GY
322-GY
114-RD
114-RD
320-RD-18
196-BU
196-BU
K909-BU-18
K909-BU-18
A770-PK-18
A770-PK-18
K909-BU-18
K909-BU-18
123-HW-18
151-GN-18
150-RD-18
A588-GN-18
A587-YL-18
200-BK-18
177-RD-14
177-RD-14
177-RD-14
177-RD-6
308-YL-18
322-GY
322-GY
114-RD
114-RD
308-YL-18
308-YL-18
308-YL-18
177-RD-14
177-RD-14
177-RD-14
177-RD-14
308-YL-18
386-PK-18
154-RD-18
200-BK
112-PU-4
109-RD-4
RELAY PANEL
111-RD-14
177-RD-14
189-RD
154-RD-18
154-RD-18
189-RD
111-RD-14
177-RD-14
786-GN-18
150-RD-18
111-RD-14
189-RD
150-RD-18
115-PK-14
115-PK-14
150-RD-18
111-RD-14
154-RD-18
189-RD
114-RD-18
114-RD-18
115-PK-14
RELAY PANEL
150-RD-18
111-RD-14
154-RD-18
189-RD
177-RD-14
101-RD-6
101-RD-6
109-RD-6
177-RD-6
(NOTE E)
101-RD-2
112-PU-6
177-RD-14
177-RD-14
115-PK-14
177-RD-14
177-RD-14
177-RD-14
S
FUSE BASE
111-4812
J
J
114-RD
177-RD-8
607-PK-18
616-BU
386-PK-18
304-WH-8
J
K909-BU-18
200-BK
196-BU
K909-BU-18
A770-PK-18
320-RD-18
149-PU
786-GN-18
308-YL-18
615-YL
791-PK-18
307-OR-18
308-YL-18
A588-GN-18
A587-YL-18
304-WH-8
308-YL-18
101-RD-6
200-BK-18
112-PU-6
200-BK-18
308-YL-18
J J
200-BK-18
200-BK-18
A770-PK-18
A587-YL-18
307-OR-18
320-RD-18
151-GN-18
151-GN-18
151-GN-18
177-RD-8
E794-YL-18
E793-BU-18
386-PK-18
386-PK-18
200-BK-18
J
123-HW-18
791-PK-18
200-BK-18
307-OR-18
K909-BU-18
320-RD-18
149-PU
149-PU-18
149-PU-18
616-BU
A588-GN-18
200-BK-18
548-GY-18
115-PK-18
115-PK-18
791-PK-18
607-PK-18
615-YL
HYD LOCK SW
308-YL-18
3
1
4
2
5
6
200-BK-18
200-BK-18
200-BK-18
307-OR-18
K909-BU-18
149-PU
7
791-PK-18
615-YL
607-PK-18
200-BK-18
200-BK-18
A588-GN-18
A587-YL-18
196-BU
8
LUBRICATOR
135-BU
320-RD-18
REFREGERANT
LOW PRESS SW.
114-5333
2
1
P
513-OR-18
ATCH REFUELING
PUMP SW(NC)
9X-4184
T T
P
P
ATCH REFUELING
STOP RELAY
111-4871
2
1
-
+
AUX CKT
AUX CKT
168-RD-10
P
P
T
P
ATCH REFUELING
PUMP SW(NO)
6T-9442
ATCH REFUELING PUMP
123-3929
952-OR-18
7
U
ATCH REFUELING
START RELAY
111-4871
UU
2
1
P
549-PK-18
N924-WH-18
C
ATCH BIO PUMP
146-9282
PUMP
1
2
B
200-BK
180-GN-14
200-BK-14
200-BK
L976-GN-18
200-BK-18
1
6
L49
C
3
1
L976-GN-18
2
L976-GN-18
10
321-BR-18
310-PU-18
955-GN-18
310-PU-18
430-BU-18
311-WH-18
C538-OR-18
139-OR-18
L40
521-YL-18
311-WH-18
311-WH-18
DIODE
121-1022
200-BK-18
430-BU-18
200-BK-18
365-YL-18
323-WH-14
200-BK-14
325-PK-18
140-BU
200-BK
200-BK-14
123-WH-14
210-BK
430-BU-18
K904-GN-18
A769-GY-18
A768-BU-18
L978-GY-18
763-BU-18
L977-YL-18
386-PK-18
306-GN-18
491-PK-18
496-WH-18
168-RD-14
607-PK-18
616-BU
495-GN-18
K906-GN-18
L974-GN-18
A771-PU-18
L971-GN-18
322-GY
12
311-WH-18
140-BU
310-PU-18
HYD LOCK SOL
C
200-BK-14
E/P CONT
15A
10A
10A
10A
10A
15A
10A
10A
10A
10A
5
30A
F846-PU-18
G848-GN-18
10A
BOOM LAMP
REFUELING PUMP
DOME LAMP
15A
N923-GY-18
168-RD-18
365-YL-18
C538-OR-18
BACKUP
FUSE
10A 9W-1442 20A 9W-1446
15A 9W-1441 30A 8T-9636
HORN
10A
CIGAR LIGHTER
521-YL-18
ECM
A/C /HEATER
WASHER/WIPER
L976-GN-18
CAB/CHASSIS LAMP
198-PK-18
198-PK-18
L976-GN-18
L976-GN-18
200-BK-18
168-RD-14
C537-GN-18
C468-BU-18
A
168-RD-18
168-RD-18
168-RD-18
168-RD-18
168-RD-18
A B
B
A768-BU-18
11
K997-BU-18
140-BU
521-YL-18
NOTE C: USE WITH ELECTRIC OPENABLE WINDSHIELD.
NOTE D: NOT NECESSITY FOR ELECTRIC OPENABLE WINDSHIELD.
THIS SCHEMATIC IS FOR THE 345B EXCAVATOR.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
NOTE B: USE WITH COLD WEATHER.
NOTE F: NOT USE WITH FINE SWING CONT. SW.
365-YL-18
N923-GY-14
A587-YL-18
ANTENNA CABLE
111-4846
SWITCH PANEL
GROUND STRAP
7G-1060
CHASSIS
PLATFORM
15A
10A
10A
15A
10A
15A
10A
L970-GY-18
INSP LAMP
2
4
954-GN-18
N923-GY-18
521-YL-18
5
1
6
168-RD-14
998-BR-18
101-RD-2
109-RD-2
304-WH-8
101-RD-2 (NOTE E)
103-RD
329-YL-18
C468-BU-18
788-YL-18
A762-PU-18
168-RD-14
893-GN-18
893-GN-18
123-WH-14
329-YL-18
365-YL-18
5
C
893-GN-18
892-BR-18
892-BR-18
892-BR-18
A
B
168-RD-14
X
ATCH REFUELING
POWER RELAY
3T-0376
325-PK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
5
6
200-BK-18
4
200-BK-18
3
2
1
521-YL-18
A499-BU-18
K904-GN-18
200-BK-18
200-BK-18
321-BR-18
A499-BU-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L974-GN-18
A771-PU-18
L971-GN-18
200-BK-18
200-BK-18
200-BK-18
311-WH-18
200-BK-18
788-YL-18
A762-PU-18
K906-GN-18
L974-GN-18
A771-PU-18
L971-GN-18
200-BK-18
168-RD-14
499-GY-18
235-BK-14
TRAVEL
PRESS SW
106-0179
IMPLEMENT
PRESS SW
106-0179
SWING
BRAKE SOL
121-1491
B
1
2
1
2
2
1
B
TRAVEL SPEED
SOL
121-1491
TRENCHING SOL
121-1490
1
2
LEVEL FINISH
SOL
121-1490
ENG/PUMP CONT
SOL
111-9916
1
2
1
2
B
2
1
BOOM RAISE
PRESS SW
106-0180
B
1
2
B
B
B
B
N923-GY-18
N923-GY-18
524-BU
118-GY
191-WH-14
120-YL
200-BK-18
118-GY
524-BU
152-BU-18
200-BK
200-BK
N923-GY-18
A424-WH-18
A425-YL-18
A425-YL-18
115-PK-14
954-GN-18
179-BU
235-BK-14
K905-RD-14
L970-GY-18
L970-GY-18
K905-RD-14
114-RD
179-RD
140-BU
200-BK-14
200-BK-14
8630-BU-18
200-BK-14
152-BU
180-GN-14
147-PU-18
180-GN-14
152-BU
524-BU
118-GY
638-WH
152-BU-18
152-BU
K906-GN-18
952-OR-18
F846-PU-18
955-GN-18
G848-GN-18
N923-GY-18
N923-GY-18
961-BR-18
G848-GN-18
955-GN-18
F846-PU-18
ATCH INDICATOR
143-3421
200-BK-18
A
F
5
6
4
2
3
1
A424-WH-18
A425-YL-18
L52
304-WH-8
8
200-BK
101-RD-4
152-BU
109-RD-4
586-BR-18
175-PK-14
176-YL
105-RD
C
B
B
112-PU-14
112-PU-14
1
1
12
8
9
2
C B
1
6
5
3
10
11
7
200-BK-18
200-BK-18
200-BK-18
HH
2
1325-PK-18
HH B
521-YL-18
L970-GY-18
786-GN-18
120-YL
546-BU-18
149-PU
616-BU
547-OR-18
C538-OR-18
C537-GN-18
210-BK
633-BU-18
135-BU
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
E793-BU-18
L977-YL-18
E793-BU-18
763-BU-18
L978-GY-18
KK (NOTE E)
200-BK-18
200-BK-18
786-GN-18
K997-BU-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
EE(NOTE B)
AA
615-YL
791-PK-18
307-OR-18
E794-YL-18
386-PK-18
306-GN-18
491-PK-18
168-RD-14
495-GN-18
322-GY
607-PK-18
616-BU
496-WH-18
308-YL-18
1
GROUND STRAP
128-8886
2
210-BK
210-BK
615-YL-18
615-YL
135-BU
135-BU
1
120-YL
AF
AF
AF
200-BK-14
200-BK
139-OR-18
149-PU
200-BK-18
200-BK-18
3
4
3
200-BK-14
ECM GND STRAP
5
6
7
8
HH
9
F400-GY-18
521-YL-18
412-BU-18
168-RD-14
168-RD-14
185-YL-18
10A
135-BU
524-BU
210-BK
200-BK-14
E794-YL-18
10
200-BK-18
A588-GN-18
A587-YL-18
152-BU-18
196-BU
K909-BU-18
101-RD-6
101-RD-2
G
200-BK
A
B
B
CHASSIS
K904-GN-18
430-BU-18
K906-GN-18
763-BU-18
C
D
139-OR-18
152-BU
112-PU-14
6
2
10
4
12
499-GY-18
124-GN
3
S
-
633-BU-18
F718-BU-18
147-PU-18
196-BU
K909-BU-18
A587-YL-18
A588-GN-18
113-OR-18
308-YL-18
307-OR-18
791-PK-18
615-YL
786-GN-18
149-PU
320-RD-18
A770-PK-18
168-RD-10
168-RD-14
CONT. O.W.D.
132-5096
111-RD-14
196-BU
RD-00
168-RD-14
AF
+
200-BK-14
200-BK-14
A
6
A769-GY-18
200-BK-18
A768-BU-18
RD-00
A499-BU-18
200-BK-18
200-BK-18
F
4
8
ENG OIL PRESS F400-GY-18
WH
GN
GND
USER DEFN SHUTDOWN
PU
BK
OR
PK
RD
BR
YL
GY
323-WH
323-WH
323-WH
101-RD-4
7
8
9
6
3
1
2
10
2
1
103-RD-18
F
403-GN-18
403-GN-18
403-GN-18
403-GN-18
BAT
L977-YL-18
763-BU-18
L978-GY-18
A768-BU-18
200-BK
A769-GY-18
200-BK-18
590-GY-18
501-GN-18
A586-OR-18
786-GN-18
791-PK-18
113-OR-18
308-YL-18
112-PU-14
307-OR-18
105-RD
A758-BR-18
A757-GY-18
200-BK-18
A756-BU-18
A755-PK-18
576-PK-18
575-YL-18
578-BU-18
200-BK-18
124-GN-18
K915-GN-18
200-BK-18
586-BR-18
310-PU-18
K904-GN-18
K997-BU-18
A769-GY-18
A768-BU-18
K906-GN-18
185-YL-18
K909-BU-18
K907-BU-18
A770-PK-18
BU
323-WH
A
200-BK-18
B
C
B
YL-18
BR-18
BK-18
+B
GROUND
SIGNAL
PUMP DISCHARGE
PRESS SENSOR
106-0178
CONSOL SW
MTR
235-BK-14 235-BK-18
235-BK-18
308-YL-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
K912-GN-18
K911-PK-18
K915-GN-18
K907-BU-18
403-GN-18
K904-GN-18
496-WH-18
430-BU-18
495-GN-18
491-PK-18
492-GY-18
321-BR-18
C468-BU-18
763-BU-18
A762-PU-18
788-YL-18
A771-PU-18
200-BK-14
200-BK-18
200-BK-18
200-BK-18
12
11
5
4
200-BK-14
200-BK-18
200-BK-18
200-BK-18
200-BK
200-BK
A850-WH-18
A849-OR-18
200-BK
200-BK-18
200-BK-18
200-BK-18
200-BK
N923-GY-14
200-BK
E/P CONT
126-2973
C468-BU-18
586-BR-18
SENSOR 2
A424-WH-18
200-BK
179-BU
C537-GN-18
SENSOR 1
185-YL-18
GND
168-RD-14
4
5
2
+ 24V
1
3
A425-YL-18
A424-WH-18
J
177-RD-14
177-RD-14
177-RD-14
177-RD-14
N923-GY
E
177-RD-14
177-RD-14
177-RD-14
177-RD-14
998-BR-18
L978-GY-18
11
189-RD
L974-GN-18
A
114-RD
114-RD
114-RD
114-RD
114-RD
112-PU-4
5
9
2
12
F
952-OR-18
10
1
SIGNAL
3
2
4
+B
SIGNAL
GROUND
HYD OIL
FILTER SW
129-8054
B
200-BK-18
S
15A
150-RD-18
2
8
6
1
177-RD-14
FINE SWING
KEY SW
10A
140-BU
149-PU
4
123-WH-18
200-BK-18
893-GN-18
H
J
892-BR-18
101-RD-4
304-WH-8
306-GN-18
607-PK-18
616-BU
386-PK-18
306-GN-18
200-BK-18
200-BK-18
200-BK-18
6
8
320-RD-18
320-RD-18
320-RD-18
N919-GN-18
N920-BU-18
N924-WH-18
A756-PU-18
892-BR-18
123-WH-18
893-GN-18
E794-YL-18
E793-BU-18
34
3
A
547-OR-18
198-PK-18
154-RD-18
177-RD-14
112-PU-14
112-PU-14
112-PU-14
320-RD-18
151-GN-18
177-RD-14
L977-YL-18
177-RD-14
147-PU-18
L3
115-PK-14
615-YL
633-BU-18
607-PK-18
N921-YL-18
N922-OR-18
H
G
I
200-BK-18
35
36
499-GY-18
499-GY-18
X
S
11
12
G
304-WH-8
STARTER
MOTOR
106-8553
200-BK-18
CHASSIS
C468-BU-18
200-BK-18
MOTOR
320-RD-18
123-HW-18
CC
A771-PU-18
4
20
22
L38
892-BR-18
893-GN-18
998-BR-18
F718-BU-18
F717-YL-18
C912-GN-18
200-BK-18
A499-BU-18
L45
A
J
10
9
8
7
2
5
3
1
6
L971-GN-18
G848-GN-18
L46
11
150-RD-18
L35
L25
L973-GN-18
12
F846-PU-18
L35
180-GN-14
E794-YL-18
E793-BU-18
123-WH-14
23
25
C912-GN-18
K997-BU-18
K997-BU-18
K997-BU-18
K997-BU-18
K997-BU-18
L970-GY-18
L971-GN-18
L977-YL-18
L974-GN-18
L978-GY-18
L969-WH-18
L968-OR-18
L972-BU-18
+5V
SENSOR COMMON
FUEL TEMP
INTAKE MANF AIR TEMP
COOLANT TEMP
OIL PRESSURE
ATM PRESSURE
BOOST PRESSURE
ENG SP/TMG
ENG SP/TMG COMMON
+V ENG SP/TMG
SENSOR
FUEL TEMP
SENSOR
INTAKE MANF
AIR TEMP
SENSOR
COOLANT TEMP
SENSOR
OIL PRESSURE
SENSOR
ATM PRESSURE
SENSOR
BOOST PRESSURE
SENSOR
SPEED/TIMING
A751-YL A751-YL
C967-BU
C967-BU
995-BU
995-BU
994-GY
994-GY
997-OR 997-OR
997-OR
997-OR
997-OR
997-OR
997-OR
993-BR 993-BR
993-BR
993-BR
993-BR
993-BR
993-BR
A747-GY
A747-GY
A746-PK
A746-PK
999-WH
999-WH
998-BR
998-BR
996-GN
996-GN
+ 12V LIGHT
11
12
1
2
3
4
5
6
7
8
9
WH
10
BK
BK
BK
513-OR-18
2
B
OR
OR
OR
OR
OR
OR
GN
GN
GN
YL
YL
YL
WH
WH
WH
BK
OR
ENG SP/TMG
ENG SP/TMG COMMON
+V ENG SP/TMG
BOOST PRESSURE
ATM PRESSURE
OIL PRESSURE
COOLANT TEMP
INTAKE MANF AIR TEMP
+5V
SENSOR COMMON
SENSOR COMMON
+5V
+5V
SENSOR COMMON
SENSOR COMMON
+5V
321-BR-18
+5V
200-BK-18
SENSOR COMMON
FUEL TEMP
3
ATCH
TRAVEL ALARM
3E-7738
B
1
2
SENSOR COMMON
BK/PK
BK
+5V
C
B
A
A
B
C
C
B
4
A
B
C
111-RD-14
5
6
A
A
129-BU-18
B
C
C
DECEL
ACCEL
INJECTOR 1
INJECTOR 2
INJECTOR 3
7
INJECTOR 4
INJECTOR 5
INJECTOR
SOL 6
INJECTOR
SOL 5
INJECTOR
SOL 4
INJECTOR
SOL 3
INJECTOR
SOL 2
118-GY
152-BU
K997-BU-18
1
A
B
C
B
26
27
28
30
J
A
5
6
29
1
37
2
23
20
8
4
14
2
3
30
36
3
1
2
31
32
33
200-BK-18
2
8
7
4
D789-WH
D789-WH
D790-OR
D790-OR
A
D790-OR
J
A701-GY
D791-YL
D791-YL
D789-WH
A706-GY
A706-GY
405-GY-18
A701-GY
2
1
3
7
11
5
1
9
A
J
A755-PK-18
A757-WH-18
158-BR-14
158-BR-14
A702-PU
1
2
2
1
INJECTOR COM 5&6
INJECTOR COM 1&2
INJECTOR COM 3&4
INJECTOR 6
INJECTOR
SOL 1
5
17
27
6
A702-PU12
18
22
28
34
A703-BR
SENSOR COM
ENG CONT
1
2
2
1
12
A703-BR
A704-GN
A704-GN
A
11
9
A705-BU
7
A705-BU
8
1
2
7
3
4
5
6
1
1
998-BR-18
L46
8
NN
NN
K976-OR-18
954-GN-18
K975-WH-18
K974-PU-18
K973-BR-18
A758-BR-18
N924-WH-18
39
40
10
11
7
21
8
4
29
3
37
1
2
3
4
5
6
8
ATTACHMENT-ENG OIL
PRESS SW
3E-6455 (N0TE E)
BK-18
RD-18
4
3
2
1
C
B
5
A
6
BU-18
311-WH-18
A424-WH-18
SENSOR O.W.D.
132-7315
SIGNAL OUT
SIGNAL IN
P
A425-YL-18
A424-WH-18
L973-GN-18
311-WH-18
10
L969-WH-18
L968-OR-18
F717-YL-18
K997-BU-18
120-YL
412-BU-18
K997-BU-18
AH
118-GY
129-BU-18
F717-YL-18
1
2
A
439-YL-18
K997-BU-18
1
2
B
AA
200-BK-18
439-YL-18
AF
HYD TANK
PRESS SW
107-0615
A499-BU-18
191-WH-14
MOTOR
WASHER
7T-8890
ATCH AUX CKT
105-RD
892-BR-18
196-BU
151-GN-18
BATTERY
3T-5760
POS
NEGNEG
POS
145-BU-12
ATCH
BATTERY
3T-5760
(NOTE C)
PROX SW
3T-3132
AC2
(ON/OFF)
121-1491
SOL
R1/R2
125-8075
F/C SOL
(PROP.)
111-9916
AUX PRESS
SW
131-9203
951-PK-18
AP
NN
HAMMER 2
SOL (ON/OFF)
116-3413
A
2
1
A425-YL-18
A425-YL-18
A424-WH-18
168-RD-14
4
6
607-PK-18
200-BK-14
189-RD
103-RD
B
103-RD
112-PU-14
112-PU-14
112-PU-14
112-PU-14
NN
955-BU-18
C
1
2
2
200-BK-12
1
585-YL-18
A848-PK-18
A847-YL-18
NN
200-BK-18
200-BK-18
893-GN-18
893-GN-18
892-BR-18
892-BR-18
E793-BU-18
E793-BU-18
E793-BU-18
E794-YL-18
E794-YL-18
E794-YL-18
2
200-BK-18
K997-BU-18
24
NN
NN
PP
AC1
(ON/OFF)
121-1491
200-BK-18
893-GN-18
ATTACHMENT
HEATER FUEL PUMP
136-7707 (NOTE E)
PUMP
A424-WH-18
955-BU-18
200-BK-14
200-BK
200-BK-18
954-GN-18
506-PU
140-BU
952-OR-18
149-PU
112-PU-14
112-PU-14
N923-GY-18
112-PU-14
892-BR-18
123-WH-14
123-WH-14
A499-BU-18
K997-BU-18
6
15
101-RD-4
L974-GN-18
PP
168-RD-14
L978-GY-18
L977-YL-18
113-OR-18
168-RD-14
521-YL-18
521-YL-18
412-BU-18
F400-GY-18
499-GY-18
L45
200-BK
200-BK
200-BK-18
GROUND
SPEAKER RH -
SPEAKER RH +
SPEAKER LH -
SPEAKER LH +
A762-PU-18
MEMORY + 12V
B+ 12V
7
8
1
2
893-GN-18
C912-GN-18
200-BK-18
306-GN-18
788-YL-18
168-RD-14
168-RD-14
123-WH-14
123-WH-14
123-WH-14
1
F718-BU-18
CAT DATA LINK (-)
CAT DATA LINK (+)
THROTTLE
+B
546-BU-18
320-OR-18
123-WH-14
ATCH. PANEL GP
ARCTIC
160-2147 (NOTE E)
WARMING WINDSHIELD
BREAKER
8D-7265
FUEL HEATER
BREAKER
3T-2662
1
4
3
200-BK-18
A499-BU-18
439-YL-18
WARMING WINDSHIELD
RELAY
125-1302
INDICATOR
ON FUEL HEATER
101-RD-14
330-YL-18
109-RD-2
(NOTE E)
L971-GN-18
200-BK
330-YL-18
SW ON/OFF
FUEL HEATER
INDICATOR
ON HEATER
SW OFF
HEATER
SW ON
HEATER
FUEL HEATER
RELAY
111-4871
198-PK-18
200-BK-18
2
198-PK-18
546-BU-18
NN
1
547-OR-18
198-PK-18
547-OR-18
198-PK-18
MULTISWITCH JOYSTICK
122-4829
RIGHT SW
546-BU-18
198-PK-18
LEFT SW
J
HORN SW
128-2134
A/C UNIT
126-3375
START DISABLE
RELAY
111-4871
191-WH-14
2
2
950-BR-18
112-PU-14
112-PU-14
112-PU-14
200-BK-18
L970-GY-18
196-BU
150-RD-18
C
NN
150-RD-18
151-GN-18
168-RD-14
149-PU
140-BU
B
A
PRESSURE SW
106-0179
952-OR-18
1
200-BK
2
NN
200-BK-18
113-OR-18
200-BK-18
200-BK
START HEATER
ESPAR
111-4871
200-BK-14
101-RD-14
101-RD-14
G872-PU-14
112-PU-14
112-PU-14
405-GY-18
578-BU-18
578-BU-18
405-GY-18
145-BU-12
F400-GY-18
200-BK
GND STRAP
132-1805
B D
B
B
B
320-RD-18
177-RD-14
200-BK
177-RD-14
A
112-PU-14
C
112-PU-14
112-PU-14
1
3
151-GN-18
C B
5
154-RD-18
A
A755-PK-18
A756-BU-18
A757-GY-18
168-RD-14
112-PU-14
196-BU
112-PU-14
111-RD-14
189-RD
151-GN-18
180-GN-14
168-RD-14
149-PU
140-BU
196-BU
548-GY-18
549-PK-18
200-BK-14
150-RD-18
185-YL-18
175-PK-14
K905-RD-14
BIO PUMP
A758-BR-18
180-GN-14
112-PU-14
A
177-RD-14
177-RD-10
177-RD-10
177-RD-14
177-RD-14
177-RD-14
177-RD-14
POS
NEG NEG
POS
177-RD-14
112-PU-14
K907-BU-18
K915-GN-18
L968-OR-18
L969-WH-18
308-YL-18
149-PU
L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
615-YL-18
615-YL-18
615-YL
140-BU
615-YL
549-PK-18
198-PK-18
548-GY-18
198-PK-18
4
2
A
H
3
1
5
3
139-OR-18
6
508-PU-18
509-WH-18
A D
511-BR-18
168-RD-14
D
CHASSIS
512-GN-18
B
D
L15
CC
GG
(NOTE B)
80A
607-PK-18
MAIN BREAKER
9S-4693
RR
325-PK-18
118-GY
200-BK-14
ZZ
200-BK-18
200-BK-14
200-BK-18
X
VV
4
2
129-BU-18
105-RD
168-RD-18
M
M
143-BR-12
F
E
D
F
952-OR-18
F400-GY-18
C912-GN-18
C
B
A
H
G
I
F
E
D
C
B
A
3
200-BK
615-YL
C912-GN-18
Y/G
Y/W
L27
200-BK-14
A499-BU-18
C912-GN-18
521-YL-18
9 8 7
386-PK-18
185-YL-18
113-OR-18
6 5 4
200-BK-18
O.W.D.
3 2 1
180-GN-14
CONVERTER
AUX CKT
1
DIODE
121-1022
AUX CKT
547-OR-18
10
198-PK-18
BOOM LAMP RELAY
111-4871
135-BU
HORN RELAY
111-4871
123-WH-14
F717-YL-18
633-BU-18
-BK
C468-BU-18
BK-00
9
12
11
7
1
6
F717-YL-18
8
3
2
START RELAY
125-1302
NEUTRAL
START RELAY
111-4871
80A
5
F717-YL-18
152-BU-18
4
12
124-GN-18
124-GN-18
XX
6
509-WH-18
508-PU-18
511-BR-18
512-GN-18
CAB/CHASSIS LAMP RELAY
111-4871
MAIN RELAY
3T-0376
7
TIMER RELAY
111-4870
9
4
3
11
10
2
8
112-PU-4
FOR INSP LAMP
9R-7941
114-RD
12
11
L15
200-BK-18
10
15A
F718-BU-18
A
9
8
112-PU-14
7
150-RD-18
1
111-RD-14
154-RD-18
189-RD
115-PK-14
177-RD-14
177-RD-14
578-BU-18
F718-BU-18
L43
A768-BU-18
N923-GY-18
2
4
6
3
578-BU-18
F718-BU-18
952-OR-18
N923-GY
N923-GY-14
168-RD-18
952-OR-18
200-BK
200-BK
200-BK
198-PK-18
200-BK
506-PU
200-BK
322-GY
322-GY
4
2
3
5
1
6
C537-GN-18
1
322-GY
114-RD
548-GY-18
198-PK-18
PP
2
RR
549-PK-18
200-BK-18
L972-BU-18
G
105-RD
112-PU-14
185-YL-18
113-OR-18
B
NN
TT
V
124-GN-18
112-PU-14
508-PU-18
200-BK-18
112-PU-14
ZZ
B
200-BK-18
GG
FF
EE
CC
BB
AA
CABLE AS.
VV
WIRE AS.
M
306-GN-18
K
J
H
F
E
D
C
IDENT PART NO. LOC
HARNESS AS.
YY
XX
S
T
WW
A
SS
KK
I-3
G-11 (NOTE B)
G-11 (NOTE B)
G-11 (NOTE B)
G-11
G-11
G-11
G-11 (NOTE E)
111-4846
116-0242
116-0080
128-8898
125-4727
116-0080
128-8884
7Y-3881
U
V
P
306-GN-18
200-BK-18
UU
G-9 (NOTE E)
G-9 (NOTE E)
I-5 (NOTE E)
I-5 (NOTE E)
I-6 (NOTE E)
A-4
G-9
D-4 (NOTE F)
G-8
G-9
G-9
E-9
F-8
E-9
150-5027
150-5026
150-1440
150-1439
150-1435
132-1827
128-8936
116-0237
128-8937
111-4831
111-4830
111-4829
128-8938
111-4826
1011
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L43
12
9 8 7 6 5 4 3 2 1101112
322-GY 322-GY
200-BK
495-GN-18
200-BK
509-WH-18
200-BK
616-BU
A770-PK-18
200-BK-18
998-BR-18
616-BU
998-BR-18
200-BK-18
G
B
K
320-RD-18
616-BU
200-BK
149-PU
786-GN-18
511-BR-18
12
11
10
9
8
615-YL
200-BK
607-PK-18
7
200-BK
512-GN-18
6
5
4
3
2
1
112-PU-14
791-PK-18
N923-GY-18
G848-GN-18
F846-PU-18
955-BU-18
952-OR-18
RABBIT
2 WAY
1 WAY
PS
961-BR-18
616-BU
200-BK
200-BK
307-OR-18
308-YL-18
200-BK
1
4
3
2
616-BU
151-GN-18
A588-GN-18
A587-YL-18
C538-OR-18
K909-BU-18
196-BU
306-GN-18
C537-GN-18
325-PK-18
118-GY
129-BU-18
L977-YL-18
L974-GN-18
168-RD-18
140-BU
168-RD-14
5
A
A
A
A
496-WH-18
200-BK-18
BK
YL
151-GN-18
GG (NOTE B)
RD-00
RD-00
633-BU-18
B
HYD OIL
FILTER SW
129-8054
GROUND
SIGNAL
+B
4
2
1
BB
B
177-RD-14
177-RD-14
L971-GN-18
196-BU
412-BU-18
499-GY-18
2
1
HYD OIL
TEMP SENDER
4I-5394
G
G
FUEL LEVEL
SENSOR
105-9911
C538-OR-18
ATCH
REFUELING
LEVEL SW
5C-6108
X
200-BK
B
2
1
HYD OIL
LEVEL SW
111-4760
ATCH
BOOM LAMP
5I-8250
2
K
T
1
546-BU-18
B
38
19
18
17
16
14
13
12
7
2
40
39
200-BK-18
5
9
32
26
25
24
21
19
16
15
13
11
10
38
35
952-OR-18
952-OR-18
952-OR-18
1
L970-GY-18
A755-PK-18
N924-WH-18
546-BU-18
547-OR-18
548-GY-18
549-PK-18
A756-PU-18
A757-WH-18
A758-BR-18
JJ
A
2
3
4
1
5A
198-PK-18
JJ
A
A
JJ
4
K976-OR-18
547-OR-18
546-BU-18
439-YL-18
K975-WH-18
K974-PU-18
K973-BR-18
3
2
L46L45
40A
15A
200-BK
200-BK-14
2
1
7
A
JJ
NN
5
3
6
1
4
2
1
2
HYD LOCK SOL RELAY
111-4871
JJ
ATCH-FOOT
SWITCH
PEDAL-RH
A
ATCH-FOOT
SWITCH
PEDAL-LH
8
7
6
5
4
3
2
1
JJ
NN
1
4
3
2
306-GN-18
386-PK-18
200-BK-14
200-BK-14
K912-GN-18
K911-PK-18
403-GN-18
191-WH-14
615-YL-18
K911-PK-18
K912-GN-18
A586-OR-18
590-GY-18
501-GN-18
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
200-BK-14
103-RD-18
118-GY
129-BU-18
615-YL-18
120-YL
403-GN-18
8
633-BU-18
210-BK
524-BU
638-WH
139-OR-18
200-BK-14
135-BU
103-RD-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
615-YL
118-GY
615-YL
K997-BU-18
524-BU
506-PU
590-GY-18
501-GN-18
A586-OR-18
103-RD
103-RD
103-RD-18
508-PU-18
509-WH-18
ATCH FUEL
HEATER
135-6299 (NOTE E)
1
2
200-BK-14
AF
200-BK-14
511-BR-18
512-GN-18
118-GY
129-BU-18
139-OR-18
120-YL
386-PK-18
145-BU-12
1
4
101-RD-12
306-GN-18
3
7
961-BR-18
308-YL-18
L969-WH-18
L968-OR-18
K915-GN-18
K907-BU-18
112-PU-14
G872-PU-14
33
9
210-BK
7
4
HORN
7T-0969
A A
7
8
1
6
5
4
3
2
A587-YL-18
A587-YL-18
H H
A587-YL-18
A587-YL-18
A587-YL-18
A758-BR-18
A757-WH-18
A756-PU-18
A755-PK-18
N923-GY-14
952-OR-18
F846-PU-18
G848-GN-18
955-BU-18
954-GN-18
K973-BR-18
K
K974-PU-18
CHASSIS
LAMP
5I-8251
ATCH
BOOM LAMP
5I-8250
K975-WH-18
K976-OR-18
2
1
549-PK-18
HORN
7T-0970
548-GY-18
547-OR-18
546-BU-18
N924-WH-18
L970-GY-18
200-BK-14
A587-YL-18
6
8
1
7
4
5
3
2
954-GN-18
135-BU
780-PU-18
C
B
A
403-GN-18
152-BU
118-GY
A499-BU-18
152-BU
200-BK-14
439-YL-18
F
576-PK-18
MONITOR +B OUT
L972-BU-18
A755-PK-18
L968-OR-18
763-BU-18
A756-BU-18
A771-PU-18
L969-WH-18
L971-GN-18
A757-GY-18
L970-GY-18
788-YL-18
A762-PU-18
430-BU-18
321-BR-18
F400-GY-18
492-GY-18
491-PK-18
495-GN-18
A758-BR-18
496-WH-18
308-YL-18
200-BK
9
12V SOCKET
9R-7941
200-BK-14
615-YL
310-PU-18
200-BK-14
L977-YL-18
103-RD-18
103-RD-18
780-PU-18
B
MOTOR
638-WH
A
C
4
7
6
8
5
152-BU-18
2
200-BK
118-GY
DOME LAMP
096-0721
3
615-YL
103-RD-18
779-WH-18
524-BU
590-GY-18
501-GN-18
129-BU-18
403-GN-18
961-BR-18
575-YL-18
F717-YL-18
200-BK-18
235-BK-18
779-WH-18
200-BK-14
A588-GN-18
892-BR-18
892-BR-18
893-GN-18
A588-GN-18
11
K997-BU-18
235-BK-18
K911-PK-18
K912-GN-18
C468-BU-18
K907-BU-18
K915-GN-18
K911-PK-18
K912-GN-18
1
103-RD-18
615-YL-18
A586-OR-18
200-BK-18
1
L909-BU-18
L908-OR-18
K904-GN-18
K905-RD-18
235-BK-18
L974-GN-18
780-PU-18
780-PU-18
C537-GN-18
200-BK
512-GN-18
511-BR-18
509-WH-18
508-PU-18
C538-OR-18
103-RD-18
BUZZER AS
113-4683
ROTARY SW
155-2715
BK
BU
FACTORY
ADJ CONN
GN
BN
A587-YL-18
THROTTLE DIAL S1
A
A
1
2
4
3
THROTTLE DIAL S2
THROTTLE DIAL S3
THROTTLE DIAL S4
ECM THRT
EPR VALVE (+)
GOV ACTR (B)
GOV ACTR FDBK
COOLANT LEVEL SW
TRAVEL SPEED SOL
ENG SPEED SENSOR (-)
ENG SPEED SENSOR (+)
TRENCHING SOL
IMPLEMENT SW
ENG OIL LEVEL SW
FUEL LEVEL SENSOR
FRONT PUMP PRESS SENSOR
HYD OIL LEVEL SW
AIR CLEANER SENSOR
HYD OIL TEMP SENSOR
RS485 - (VALVE CONT)
RS485 + (VALVE CONT)
RS232C (GND)
RS232C (RX)
COOLANT SENSOR
9
20
10
28
31
26
13
30
29
35
40
2
6
39
6
24
25
22
15
ALTERNATOR (R TERM)
RS485 - (RH JOYSTICK)
7
38
12
TRAVEL ALARM
ENG OIL PRESS SW
36
SWING BRAKE SOL
23
EPR VALVE (-)
17
21
8
RS485 + (LH JOYSTICK) 7
CAB
8
RS485 - (LH JOYSTICK)
RS485 + (PEDAL) 9
10
RS485 + (SEMI AUTO)
RS485 - (PEDAL)
RS485 + (RADIO CONT)17
HYD TANK PRESS. SW
RS485 + (MONITOR)
RS485 - (SEMI AUTO)
HYD TANK INDICATOR
RS485 + (RH JOYSTICK)
RS485 - (MONITOR)
27
18
RS232C (RX)
TRAVEL SW
HYD OIL FILTER INDICATOR
DIGITAL OUT (-)
18
RS485 - (RADIO CONT)
CAT DATA LINK (+)19
+B
+B
AIR INDICATOR
FINE SWING SW
ELEC GOV THROTTLE DIAL
RS485(+)
BOOM RAISE PRESS SW
LEVEL FINISH SOL
ENG POWER CHANGE SOL
OPTION PRESS SW
32
33
25
KEY SW ON
CAT DATA LINK (-)
26
12
40
2
4
28
27
LOW IDLE SW
21
20
1
11
22
34
3
24
23
14
13
16
15
5
36
35
29
31
30
39
38
37
GND
GND
HAMMER PRESS. SW
RS232C (TX)
KEY SW START
A
LUNCH BOX LIGHT
2
3
4
5
6
1
8
7
OPTION SW37
4
3
OPTION SENSOR (PWM)
1
16
19
5
OPTION SENSOR (PWM)
12
32
33
DIGITAL OUT (-)
DIGITAL OUT (-)
14
11
34
ATCH SPEAKER(L)
7Y-5505
ATCH SPEAKER(R)
7Y-5505
6
10
8
12
5
2
4
7
7
8
9
10
1
11
CONVERTER
131-0327
7
6
5
4
310-PU-18
3
8
1
2
5
4
3
2
1
6
F
F
F
F
F E E
A A A
6
5
4
3
2
L6
GND
24V BAT IN MEM
24V SW. IN
LIGHT OUT (DC 12V)
12V MEM OUT
GND
12V SW. OUT
LIGHT IN (DC 24V)
5
BACKUP
RESISTOR
102-8017
1
6
2
5
3
4
2
3
4
5
6
1
8
7
JOY STICK +B OUT
BK-00
RD-00
RD-00
A
CHASSIS
K909-BU-18
FF (NOTE B)
BB
EE (NOTE B)
AA
321-BR-18
115-PK-14
189-RD
154-RD-18
111-RD-14
150-RD-18
A770-PK-18
A769-GY-18
A768-BU-18
492-GY-18
BA
2
K906-GN-18
1
578-BU-18
307-OR-18
308-YL-18
791-PK-18
786-GN-18
C468-BU-18
586-BR-18
A762-PU-18
788-YL-18
403-GN-18
495-GN-18
496-WH-18
491-PK-18
A769-GY-18
763-BU-18
L978-GY-18
A771-PU-18
K906-GN-18
430-BU-18
K904-GN-18
8630-BU-18
3
147-PU-18
L973-GN-18
200-BK-14
6
4
5
WW
XX
ZZ
UU
YY
YY
VV
UU
OUT 2
GND
IN 1
IN 2
+B
235-BK-14
OUT 1
ALT BREAKER
9S-4693
DISCONNECT SW.
7N-0718
7N-0719(NOTE B)(NOTE E)
WW
K904-GN-18
322-GY
ET CONN AND ECAP CONN
496-WH-18
112-PU-4
L38
412-BU-18
200-BK-18
430-BU-18
180-GN-14
F400-GY-18
123-WH-18
893-GN-18
892-BR-18
140-BU
168-RD-14
310-PU-18
ATA DATA LINK (-)
321-BR-18
ATA DATA LINK (+)
492-GY-18
C468-BU-18
A762-PU-18
788-YL-18
403-GN-18
495-GN-18
496-WH-18
491-PK-18
A769-GY-18
892-BR-18
893-GN-18
123-WH-14
123-WH-18
521-YL-18
F400-GY-18
412-BU-18
499-GY-18
495-GN-18
L51
109-RD-4
T
491-PK-18
L15
RELAY PANEL
492-GY-18
321-BR-18
1
2
306-GN-18
200-BK
C468-BU-18
763-BU-18
A762-PU-18
788-YL-18
A771-PU-18
403-GN-18
A587-YL-18
200-BK-14
1
235-BK-14
4
A
200-BK-18
954-GN-18
K905-RD-14
2
200-BK-18
A705-BU
A704-GN
A703-BR
A702-PU
A706-GY
322-GY
D791-YL
129-BU-18
118-GY
A701-GY
D790-OR
D789-WH
329-YL-18
168-RD-18
L41
K904-GN-18
K906-GN-18
L974-GN-18
A771-PU-18
L971-GN-18
L972-BU-18
200-BK-18
AUX BACKUP SW
C
B
A
L16
191-WH-14
549-PK-18
168-RD-14
499-GY-18
200-BK-18
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
TO MACHINE STRUCTURE
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
N924-WH-18
N923-GY-14
310-PU-18
K997-BU-18
120-YL
115-PK-14
191-WH-14
200-BK
105-RD
306-GN-18
124-GN
1
200-BK
4
200-BK-18
200-BK
200-BK-14
ATCH BEACON
RELAY
8630-BU-18
638-WH
386-PK-18
306-GN-18
491-PK-18
152-BU
6
8
3
2
L20
5
L23
168-RD-14
495-GN-18
198-PK-18
A587-YL-18
954-GN-18
780-PU-18
779-WH-18
1
955-BU-18
G848-GN-18
D791-YL
F846-PU-18
952-OR-18
4
180-GN-14
A425-YL-18
152-BU
B
A424-WH-18
C
B
200-BK-14
L51
1
2
200-BK
124-GN-18
638-WH
200-BK
A537-PK-18
2
1
200-BK-18
586-BR-18
200-BK-18
506-PU
506-PU
A424-WH-18
A425-YL-18
152-BU
638-WH
8630-BU-18
105-RD
576-PK-18
575-YL-18
C
A770-PK-18
A769-GY-18
A768-BU-18
K906-GN-18
615-YL-18
L973-GN-18
578-BU-18
307-OR-18
308-YL-18
791-PK-18
786-GN-18
185-YL-18
ATCH ROTATING BEACON LAMP
113-OR-18
A586-OR-18
501-GN-18
590-GY-18
323-WH-14
329-YL-18
168-RD-18
180-GN-14
491-PK-18
152-BU
8630-BU-18
K909-BU-18
322-GY
607-PK-18
200-BK-18
616-BU
496-WH-18
200-BK-18
495-GN-18
616-BU
200-BK-18
607-PK-18
168-RD-14
L18
495-GN-18
200-BK-18
616-BU
607-PK-18
168-RD-14
496-WH-18
L23
A499-BU-18
A
A
ATCH
SEAT WITH
SEAT HEATER
111-6458
12
1
325-PK-18
11
8
2
12
9
10
11
4
3
2
1
9
8
2
7
6
5
4
3
10
1
4
5
6
1
7
3
3
HH
AA
H
2
A
H
4
A
L977-YL-18
763-BU-18
L978-GY-18
A768-BU-18
A769-GY-18
200-BK-18
200-BK-14
A537-PK-18
124-GN-18
200-BK-18
779-WH-18
2
1
L969-WH-18
321-BR-18
198-PK-18
MULTISWITCH JOYSTICK
122-4828
RIGHT SW
548-GY-18
L16
200-BK-18
A770-PK-18
L968-OR-18
200-BK-18
198-PK-18
2
3
4
1
A425-YL-18
191-WH-14
N924-WH-18
200-BK-18
200-BK-18
3
8630-BU-18
615-YL-18
615-YL-18
200-BK-18
200-BK-18
780-PU-18
A425-YL-18
A424-WH-18
780-PU-18
779-WH-18
779-WH-18
L42
779-WH-18
JJ
L42
179-BU
200-BK-18
200-BK-18
615-YL-18
PROVION
615-YL-18
7
2
575-YL-18
576-PK-18
578-BU-18
L973-GN-18
152-BU-18
200-BK-18
200-BK-18
K907-BU-18
200-BK-18
200-BK-18
615-YL-18
615-YL-18
586-BR-18
200-BK-18
8630-BU-18
ATCH ROTATING
BEACON SW
H
(NOTE F)
TT
N923-GY-14
N924-WH-18
615-YL-18
200-BK-18
191-WH-14
K909-BU-18
200-BK-18
L8
200-BK-18
L16
615-YL-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
185-YL-18
F718-BU-18
779-WH-18
439-YL-18
L35
L4
L33
998-BR-18
L21
L31L36 L9 L8 L12 L13
H
L32
L31
HH
L33
K915-GN-18
308-YL-18
L19
L25
L3
L25
780-PU-18
L32
L31
2
1
638-WH
200-BK
L19
L20
L25
L3
L4
L19
L20
L25
L2
524-BU
524-BU
L978-GY-18
615-YL-18
615-YL-18
N923-GY-14
L27
L26
L26
L30
998-BR-18
L10
200-BK-18
615-YL-18
780-PU-18
A769-GY-18
F718-BU-18
152-BU-18
615-YL-18
200-BK-18
A768-BU-18
F
A
L6
K906-GN-18
998-BR-18
L28
615-YL-18
185-YL-18
152-BU-18
L10
SS
310-PU-18
ATCH AUX SW
615-YL-18
615-YL-18
168-RD-14
200-BK-18
779-WH-18
168-RD-14
H
ATCH START
AID SW
111-4784
780-PU-18
185-YL-18
L5
ATCH WARMING
WINDSHIELD SW
138-5130 (NOTE E)
H
L11
200-BK-18
780-PU-18
200-BK-18
ATCH AUX HYD
CONT SW
111-4787
HH
H
ATCH O.W.D.
132-1828
H
BACKUP
EPR VALVE SW
114-0421
H H
BACKUP
THRT SW
110-7884
ATCH SEAT
HEATER SW
111-4783
H
118-GY
118-GY
118-GY
506-PU
A
780-PU-18
780-PU-18
779-WH-18
A424-WH-18
8
7
200-BK-18
200-BK-18
779-WH-18
780-PU-18
780-PU-18
779-WH-18
780-PU-18
780-PU-18
779-WH-18
780-PU-18
780-PU-18
200-BK-18
200-BK-18
780-PU-18
780-PU-18
200-BK-18
200-BK-18
779-WH-18
200-BK-18
6
5
LOW PRESSURE
SOL (A1)
121-1491
1
2
HIGH PRESSURE
SOL (A2)
156-9513
BK-18
2
1
C
C
C
311-WH-18
C
788-YL-18
A762-PU-18
ALTERNATOR
100-5047
101-RD-4
ENG OIL
LEVEL SW
111-4759
1
2
2
1
C
304-WH-8
C
E
ATCH
START AID
COOLANT TEMP SW
3E-6449
C912-GN-18
ENG SPEED
PICKUP
6V-2455
788-YL-18
B+
R
ALT
A/C CLUTCH
SOL
113-3499
ATCH
START AID
SOL
3E-6322
1
2
B
B
ON(KEY)
GROUND 2
1
AIR CLEANER SW
109-9330
A762-PU-18
WH-18
200-BK
200-BK-18
COOLANT
LEVEL SW
096-0744
ATCH AUTO
LUBRICATION PUMP
127-5264
B
B
325-PK-18
200-BK-18
499-GY-18
200-BK-18
386-PK-18
168-RD-18
638-WH
330-YL-18
330-YL-18
330-YL-18
E455-BR-18
B
E455-BR-18
491-PK-18
200-BK-18
200-BK-4
200-BK-4
109-RD-4
109-RD-4
101-RD-4
304-WH-8
C
322-GY
200-BK-18
F717-YL-18
F718-BU-18
F717-YL-18
BK
BK
4
3
2
168-RD-18
499-GY-18
200-BK-18
200-BK-18
200-BK-18
308-YL-18
L36
308-YL-18
200-BK-18
200-BK-18
200-BK
200-BK-18
A758-BR-18
118-GY
HIGH PRESSURE
SOL (A3)
156-9513
779-WH-18
200-BK-18
200-BK-18
780-PU-18
1
780-PU-18
1
200-BK-18
200-BK-18
307-OR-18
A757-GY-18
615-YL-18
A756-BU-18
780-PU-18
308-PU-18
L30
200-BK-18
L30
A755-PK-18
200-BK-18
2
A
2
1
200-BK-18
200-BK-18
1
124-GN-14
200-BK-18
124-GN-14
124-GN-14
124-GN-14
2
3
L16
3
21
4
ATCH
SUCTION LINE
SHUTOFF LIMIT SW
3E-5181
WH-18
4
5
6
WH-18
A
615-YL-18
105-RD
WH-18
A586-OR-18
152-BU-18
A537-PK-18
WH-18
501-GN-18
1
4
3
2
K912-GN-18
201-BK-18
103-RD-18
7
308-YL-18
5
4
3
2
1
2
3
4
1
8
1
WH-18
WH-18
N923-GY-14
200-BK-18
WH-18
WH-18
ATCH
SUCTION LINE
SHUTOFF LIMIT SW
3E-5181
4
1 2
952-OR-18
200-BK-14
780-PU-18
C
308-YL-18
200-BK
103-RD-18
633-BU-18
139-OR-18
210-BK
120-YL
135-BU
412-BU-18
780-PU-18
615-YL-18
K976-OR-18
615-YL
K975-WH-18
K974-PU-18
K973-BR-18
N919-GN-18
N920-BU-18
N921-YL-18
N922-OR-18
546-BU-18
548-GY-18
549-PK-18
200-BK
547-OR-18
952-OR-18
N923-GY
G848-GN-18
A849-OR-18
A850-WH-18
951-PK-18
950-BR-18
A847-YL-18
A848-PK-18
F846-PU-18
585-YL-18
200-BK
2
200-BK-18
5
22
16
10
4
21
15
9
3
24
20
19
6
MEDIUM PRESS SOL R2
18
11
17
23
12
1
7
8
13
14
THROTTLE POS SW
NN
E/P CONTR
E/P CONTR
E/P CONTR
E/P CONTR
THROTTLE POS SW
AUX PILOT MAN AC1
FLOW CONTROL SOL
RH - JOYSTICK
GROUND
AUX PILOT MAN AC2
PROX SW
MEDIUM PRESS SOL R1
LH - JOYSTICK
LH - JOYSTICK
HAMMER 2 SPEED SOL
FLOW CONTROL SOL
ROCKER SW CSL
RH - JOYSTICK
PRESSURE SW
AUX CKT POWER SUPPLY
THROTTLE POS SW
200-BK-18
THROTTLE POS SW
WASH SW
200-BK-18
779-WH-18
200-BK-18
779-WH-18
9
200-BK
118-GY
524-BU
103-RD-18
200-BK-18
200-BK-18
103-RD-18
F
LL
954-GN-18
H
LL
C-11 (NOTE E)
G-11 (NOTE E)
F-10 (NOTE E)
A-3
I-7
A-2
F-10
H-6
A-6
C-6
B-1
H-4
F-4
C-6
C-5
E-9
C-11
H-3
A-3
C-2
A-6
A-4
A-3
H-6
D-2
128-7859
161-5669
128-3774
128-8953
160-0974
125-4868
151-3116
144-5561
144-1180
117-7028
125-4848
155-2490
143-2826
154-8149
130-6568
143-7633
143-9058
136-4731
116-0096
156-6125
144-1179
116-0098
128-8970
144-2177
145-7213
N924-WH-18
N923-GY-14
N924-WH-18
546-BU-18
547-OR-18
8
7
6
5
4
3
200-BK-18
2
1
200-BK-14
K911-PK-18
590-GY-18
779-WH-18
200-BK-18
200-BK-18
780-PU-18
7
200-BK-18
403-GN-18
524-BU
506-PU
129-BU-18
C538-OR-18
C537-GN-18
780-PU-18
200-BK-18
780-PU-18
200-BK-18 200-BK-18
1
3
5
4
6
A
2
8
780-PU-18
200-BK-18
780-PU-18
200-BK-18
403-GN-18
OPERATOR STATION
180-GN-14
200-BK-14
A424-WH-18
A425-YL-18
321-BR-18
200-BK-14
200-BK-14
A769-GY-18
A768-BU-18
L978-GY-18
763-BU-18
L977-YL-18
A499-BU-18
496-WH-18
616-BU
1
2
147-PU-18
A
3
L973-GN-18
L43
607-PK-18
308-YL-18
200-BK-18
113-OR-18
791-PK-18
L40
786-GN-18
A586-OR-18
501-GN-18
590-GY-18
UPPER WIPER MOTOR
131-0399
200-BK-18
201-BK-18
F
M
615-YL
L34
K976-OR-18
K975-WH-18
322-GY
495-GN-18
168-RD-14
491-PK-18
306-GN-18
961-BR-18
386-PK-18
K997-BU-18
6
3
168-RD-14
SIGNAL
ATCH-AUX/BACKUP
RELAY
145-6907
200-BK-14
L970-GY-18
N924-WH-18
546-BU-18
547-OR-18
893-GN-18
499-GY-18
168-RD-14
548-GY-18
549-PK-18
K974-PU-18
K973-BR-18
954-GN-18
955-BU-18
G848-GN-18
F846-PU-18
952-OR-18
N923-GY-14
LEFT SW
L34
L971-GN-18
L11
L12
H
L6
L6
E
CAB
A771-PU-18
A755-PK-18
A756-PU-18
A757-WH-18
A758-BR-18
200-BK
E
E
+
L974-GN-18
403-GN-18
403-GN-18
403-GN-18
M
+B
L. CHASSIS
L. BOOM
HYD TK IND
WASH
W. LOW
W. INT
GND
GND
LIGHT
RS485-
+B
MAIN
RS485+
500-BR-18
200-BK-18
INTER SW
WIPER SW
OUTPUTS
MOT WASH
+ 24 IN
GND IN
WIND SW
WIPER CONT
127-9838
403-GN-18
K906-GN-18
L13
200-BK-18
L13
L12
L11
L9
L8
961-BR-18
L9
L8
E
500-BR-18
K905-RD-18
K905-RD-18
L1
A
A
E
L6
200-BK-18
L1
412-BU-18
WINDSHIELD SW
9G-2795 (NOTE E)
K905-RD-18
615-YL
K905-RD-14
L4
K904-GN-18
S4
S3
S2
S1
COM
L52
CAB LAMP
5I-8250
L28
OPTION SW
ATCH-AUX/HYD
CONTROLLER
122-9897
A425-YL-18
A424-WH-18
H
A424-WH-18
MONITOR
106-0172
SWITCH PANEL
128-8909
KEY SW
9G-7641
H
A425-YL-18
L2
A/C PHOTO
SENSOR
128-2162
L3
-
L2
L41
SERVICE METER
6T-7337
THROTTLE
POS SW
106-0107
A425-YL-18
E
E
E
R
C
S
B
E
200-BK-18
OFF
200-BK-18
ON
ST
200-BK-18
L4
H
ONE TOUCH
LOW IDLE SW
CIGAR LIGHTER
9W-0335
A424-WH-18
MM
MM
200-BK-18
L5
L6
125-4860 V03
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
E97584
L38
+24 VDC OUT-WATER PMP
+24 VDC IN-FUEL HTR
+24 VDC IN-FUEL HTR
FUEL FIRED HTR-ENABLE
CONN 1
CONN
2
CONN
CONN
CONN
CONN
3
4
5
6
CONN 64
CONN
7
CONN
CONN
CONN
CONN
8
9
10
11
CONN
CONN
CONN
CONN
CONN
12
13
14
15
16
CONN
17
CONN
18
CONN 19
CONN
20
CONN 21
CONN 22
CONN 23
CONN 24
CONN 25
CONN 26
CONN
27
CONN
CONN 28
CONN 30
CONN 31
32
CONN
29
CONN
CONN
CONN
CONN
33
34
35
36
CONN
CONN
CONN
37
38
39
CONN
CONN
40
41
CONN 51
CONN 52
CONN 42
CONN 43 CONN 44 CONN 45 CONN 46 CONN 47 CONN 48 CONN 49 CONN 50
CONN
59
CONN 56
CONN 57
CONN 58
CONN 55
CONN 54
CONN 53
CONN 60
CONN 61
CONN 62
CONN 63
L49
ALL DASHED LINES ARE ATTACHMENTS.
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.
MONITORING SYSTEM.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE CONTROL CIRCUIT.
START AID CIRCUIT.
ARTIC HEATING PACKAGE.
ENG/PUMP CONTROL CIRCUIT.