Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Monitoring Circuits Continued
101 RD Bat (+) H415 BR O.L. Warning Relay to O.L. Warning Press. SW
103 RD Dome Lamp H454 PK O.L. Warning Relay to Diode
105 BR Key SW H455 OR Diode to O.L. Warning Buzzer
107 RD Engine Shutdown Accessory Circuits
109 RD Alt Output (+) Term. 500 BR Wiper - Front (Park)
110 RD Washer/Cigar Relay 501 GN Wiper - Front (Low)
112 PU Main Power Relay Output 506 PU Washer - Front
113 OR Opr Mon Panel B (+) Switched 508 PU Radio Speaker - Left
114 RD Warning Horn Relay (Forward) 509 WH Radio Speaker - Left (Common)
115 RD Chassis/Boom Lamp Relay 511 BR Radio Speaker - Right
118 RD Wiper Relay 512 GN Radio Speaker - Right (Common)
121 YL Backup Alarm 513 OR A/C Compressor/Refrigerant Pressure SW
122 BU Refueling Pump 519 PK Thermostat to Refrigerant Press. SW
124 GN A/C A537 PK Seat Heater SW to Seat Heater
127 RD Cab Lamp Relay A588 GN Neutral Start Relay to Neutral Start SW
129 BU Lighter C576 BU Switch #1 to Medium Pressure Sol #1
135 BU 12V SW Out C577 GY Switch #1 to Medium Pressure Sol #2
139 OR +12V Mem Out C588 BR Blade SW to Blade Relay
142 BU Solenoid C589 GY Blade Relay to Blade Sol
150 RD Bat (+) C591 PK Floating Blade Relay to Floating Blade Sol
151 GN Neutral Start SW C599 OR Floating Blade Sw to Floating Blade Relay #2
168 GN Air Bleed SW E500 YL Blade Relay to Floating Blade Relay
180 GN Aux Ckt / Seat Heater SW E501 PU Floating Blade Relay #2 to Blade Relay
190 PK Gov Actr E535 GN Swing Boom SW to Swing Boom Sol
Ground Circuits Lighting Circuits
200 BK Main Chassis 607 PK Flood Lamp - Front
210 BK Converter Output (24/12 Volt) 615 YL Cab Flood Lamp/Rops
Basic Machine Circuits 616 BU Bucket Flood Lamp/Boom Flood Lamp
303 BR Hyd Lock Timer 633 BU Attach Lighting Ckt
304 WH Starter Relay No. 1 Output Control Circuits
306 GN Starter Relay Coil 763 BU Travel Speed SW to Travel Speed Sol
307 OR Key SW to Neutral Start Relay 786 GN Cab Light SW
310 PU Start Aid SW to Start Aid Sol 791 PK Boom Lamp SW
320 RD Horn Relay Coil to Horn SW 792 OR Wiper SW
321 BR Backup Alarm Lamp Travel Alarm 799 WH Travel Alarm Cancel SW
322 GY Warning Horn (Forward) B786 BU Low Idle SW
323 WH Fuel Pump Power H740 OR HEX Governor Motor +
325 PK Fuel Pump Relay Cut-Out H741 WH HEX Governor Motor -
327 PK Shutdown Solenoid H742 PU HEX Governor Accel Input
330 YL Neutral Start Relay Coil H743 YL HEX Governor Decel Input
332 BU Shutdown SW to Shutdown Ctrl H744 BU HEX Governor Low Idle
365 YL Fuel Pump Relay to Fuel Pump SW H745 BR HEX Governor SW Return
Monitoring Circuits J703 PK Alt Pulse Sig to Anti-Start Relay
403 GN Alternator (R) Term. K776 GN Alternator L terminal
405 GY Opr Mon Oil Press. (Low Setting) K777 GY Governor Pressure SW
406 PU Opr Mon Coolant Temp K778 WH Hydraulic Excavator Pwr Mode SW
441 OR Eng Coolant Temp Gauge 817 WH Travel Alarm Timer to Travel Press SW
442 GY Hyd System Temp Gauge 877 YL Glow Plug Magnetic SW to Glow Plug
447 PK Fuel Level Gauge D813 OR Low Idle SW HEDC
G480 GN 12 Volt (Fuel Indicator) 955 BU Hammer Sol A
G481 WH 12 Volt (Coolant Temperature Indicator) L976 GN Excavator Fuel Pump SW
G482 PK 12 Volt (Hydraulic Temperature Indicator) N933 PU Low Idle Indicator
H414 YL O.L. Warning Switch to O.L. Warning Relay
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Engine Governor E-2
C
Sender - Hydraulic Oil Temp A-6
19
Alarm - Over Load Warning H-4
D
Sensor - Fuel Level A-6
20
Alarm - Travel A-6
1
Socket - 12V C-2
C
Alternator B-8
2
Solenoid - Hydraulic Lock G-3
F
Antenna B-1
3
Solenoid - Medium Pressure Valve B-6
21
Assembly - Diode F-3
C
Solenoid - A/C Compressor Clutch C-8
22
Batteries D-9
4
Solenoid - Blade B-6 23
Block Assembly F-7
E
Solenoid - Engine Pump Control A-6 24
Breaker - Alternator F-9
E
Solenoid - Engine Shutdown A-8 25
Controller D-2
5
Solenoid - Hammer F-4
F
Converter C-2
B
Solenoid - Travel Speed A-6
26
Diode J-4
A
Solenoid - Swing Boom G-3
B
Fuse Block J-7,8,9
E
Speakers C-5
F
Glow Plug C-8
6
Switch - Air Bleed H-2
C
Ground Strap B-8
7
Switch - Blade F-2
C
Ground Strap G-5
8
Switch - Blade J-5
C
Horn B-3
9
Switch - Blade Floating F-2
C
Lamp - Boom B-2
10
Switch - Cab Lamp J-2 C
Lamp - Cab E-1
11
Switch - Coolant Temperature B-8 22
Lamp - Chassis A-3
12
Switch - Disconnect D-9
28
Lamp - Dome C-5
A
Switch - Engine Oil Pressure B-8
29
Lighter - Cigar C-4
C
Switch - Governor Pressure D-7
30
Meter - Service J-2
C
Switch - Hammer F-2
C
Monitor C-4
34
Switch - Horn G-1
D
Motor - Fuel Pump A-5
13
Switch - Key Switch E-2
C
Motor - Starter A-8
14
Switch - Lamp(Boom/Chassis) J-1
D
Motor - Washer E-9
15
Switch - Low Idle F-2
C
Motor - Wiper F-1
16
Switch - Medium Pressure G-1
D
Multiswitch - Joystick (LH) G-1
D
Switch - Neutral Start J-1
C
Multiswitch - Joystick (RH) F-2
C
Switch - Over Load Warning J-4
D
Radio AM/FM C-2 A Switch - Over Load Warning Pressure B-2
31
Relay - A/C and Heater G-6
E
Switch - Power Mode H-2
D
Relay - Start Cont. H-5
E
Switch - Refrigerant Low Press C-8
29
Relay - Blade 1 H-9
E
Switch - Refueling A-6
20
Relay - Blade 2 H-8
E
Switch - Refueling Start A-3
17
Relay - Blade Floating H-7
E
Switch - Refueling Stop A-3
17
Relay - Cab Lamp H-8
E
Switch - Seat Heater J-4
D
Relay - Chassis/Boom Lamp H-9
E
Switch - Swing Boom J-5
D
Relay - Horn H-7
E
Switch - Swing Boom G-1
D
Relay - Neutral Start H-7
E
Switch - Travel Alarm Cancel H-2
D
Relay - Over Load Warning J-4
C
Switch - Travel Alarm Timer J-5
E
Relay - Refueling A-3
17
Switch - Travel Pressure D-7
30
Relay - Refueling 2 A-2
17
Switch - Travel Speed H-1
D
Relay - Refueling Pump A-2
17
Switch - Washer H-1
D
Relay - Start G-6
E
Switch - Wiper H-1
D
Relay - Washer/Cigar H-8
E
Timer - Engine Shutdown H-5
E
Relay - Wiper J-9
E
Timer - Hydraulic Lock H-6
E
Resistor C-4
C
Unit - Air Conditioner H-4
27
Seat With Heater Seat J-2
A
Unit - Heater H-4
32
Sender - Engine Coolant Temp B-8
18
Machine locations are repeated for components located close together.
A = Located inside of cab.
B
= Inside of cab, rear.
C = Righthand console.
D = Lefthand console.
E = Located around relay panel.
F
=
Located under platform.
Off Machine Switch Specification
Part No. Function Actuate Deactuate
Contact Position
78.5 ± 9.8 kPa 49.0 ± 9.8 kPa Normally
(11.4 ± 1.4 psi ) 7.1 ± 1.4 psi Open
106 ± 2° C 97° C Normally
( 222.8 ± 3.6°F ) ( 206.6°F MIN ) Closed
Governor Pressure 1520 ± 98kPa 1127 kPa MIN Normally
Travel Pressure (220 ± 14psi ) ( 163 psi MIN ) Open
275 to 1750 kPa¹ -- Normally
(40 to 255 psi) -- Open²
20103 ± 517 kPa 18517 ± 517 kPa Normally
( 2915.7 ± 75 psi ) ( 2685.7 ± 75psi ) Closed
106-0179
5I-6587
085-5121
Engine Oil Pressure
Engine Coolant Temperature
¹ With increasing pressure the closed condition can be maintained up to 2800 kPa (405 psi), with decreasing pressure the closed
condition can be maintained down to 170 kPa (25psi).
² Contact position at the contacts of the harness connector.
Refrigerant Pressure (A\C)114-5333
135-7748 Over Load Warning Pressure
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
3E-1906 Solenoid: A/C Clutch 17.6 ± 0.6
096-4643 Sender: Hydraulic Oil Temperature
80.0 ± 10 @ 50 ± 0.2°C (122 ± 0.4°F)
56.3 ± 5 @ 60 ± 0.2°C (140 ± 0.4°F)
29.5 ± 2.5 @ 80 ± 0.2°C (176 ± 0.4°F)
16.5 ± 0.9 @ 100 ± 0.3°C (212 ± 0.5°F)
14.3 ± 0.5 @ 106 ± 0.5°C (223 ± 0.9°F)
10 ± 0.3 @ 120 ± 0.3°C (248 ± 0.5°F)
121-1491 Solenoid: Hydraulic Lock 32.0 ± 3.2
¹ At room temperature unless otherwise noted.
300(3 sets of 2 in Parallel)140-0924 Resistor: Indicator Power
Related Electrical Service Manuals
Form Number
RENR2978
Title
Electrical and Electronic Systems
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 E-9 E
CONN 2 E-9 E
CONN 3 E-8 E
CONN 4 E-8 E
CONN 5 E-8 E
CONN 6 F-7 E
CONN 7 C-6 C
CONN 8 C-6 C
CONN 9 B-6 C
CONN 10 E-5 G
CONN 11 G-4 G
CONN 12 G-4 G
CONN 13 G-4 G
CONN 14 E-4 G
CONN 15 E-4 G
CONN 16 E-4 G
CONN 17 E-4 G
CONN 18 A-3 17
CONN 19 A-3 17
CONN 20 A-3 12
CONN 21 B-3 10
CONN 22 E-1 11
CONN 23 E-1 11
CONN 24 A-6 20
CONN 25 B-3 33
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.
Machine Harness Connector And Component Locations
A
A
3
3
4
4
5
5
8
8
9
9
10
10
10
11
11
11
12
12
15
15
14
14
13
13
16
16
B
B
C
C
D
D
E
E
1
1
2
2
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
34
33
33
7
7
6
6
F
34
T
Normally open switch that will close with an increase of a specific condition (temp,press,etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to the
gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The electromagnet
can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
that makes an electromagnet when current flows through it. The electromagnet can open or
close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
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.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
RENR1174-01
March 2001
307 Swing Boom Excavator
Electrical System
AFB1-UP
©
2001 Caterpillar
All Rights Reserved
Printed in U.S.A.
BU
BK
YL
WH
BU
BK
YL
WH
LIGHT IN (DC24V)
1
616-BU-18
12V SW OUT
GND
7
2
3
8
6
5
4
200-BK
+24V BAT IN MEM
LIGHT OUT (DC12V)
+12V MEM OUT
+24V SW IN
GND
113-OR
135-BU
210-BK
139-OR-18
633-BU-18
103-RD-18
ATCH CONVERTER
1310327
12V 7A
135-BU
210-BK
ATCH 12V SOCKET
9R-7941
P
P
SPEAKER LH-
SPEAKER LH+
SPEAKER RH-
SPEAKER RH+
+12V LIGHT
GROUND
MEMORY +12V
509-WH-18
508-PU-18
512-GN-18
511-BR-18
633-BU-18
210-BK
135-BU
B+ 12V
139-OR-18
7
8
3
5
4
2
6
1
ATCH
AM/FM RADIO
114-6564
ANTENNA
6C-3431
L26
L26
P
113-OR-18
G480-GN-18
G482-PK-18
G481-WH-18
G481-WH-18
G482-PK-18
G480-GN-18
113-OR-18
200-BK-18
200-BK-18
330-YL-18
447-PK-18
406-PU-18
405-GY-18
N933-PU-18
877-YL-18
616-BU-18
330-YL-18
G481-WH-18
200-BK-18
447-PK-18
406-PU-18
405-GY-18
N933-PU-18
877-YL-18
113-OR-18
616-BU-18
441-OR-18
442-GY-18
441-OR-18
442-GY-18
200-BK
G482-PK-18
G480-GN-18
129-BU
200-BK-18
DOME LAMP
096-0721
103-RD-18
200-BK-18
H
RD
GN
WH
BR
GY
BK
BU
YL
F
F
C599-OR-18
C588-BR-18
DIODE
121-1022
B786-BU-18
D813-OR-18
142-BU-18
142-BU-18
955-BU-18
C588-BR-18
C588-BR-18
E501-PU-18
E
E
E
E
E
E
E
4
3
2
1
5
4
3
2
1
6
BLADE SOL.
143-2390
B
12V IN(COOLANT TEMP IND)
12V IN(FUEL IND)
11
9
7
8
FUEL TANK UNIT
ILLUM
HEATER RELAY
HYD OIL TEMP SENDER
ONE TOUCH LOW IDLE
+ BATTERY
GND
START CONT RELAY
ENG OIL PRESS. SW
COOLANT TEMP SW
COOLANT TEMP SENDER
MONITOR GP
168-7705
12V IN(HYD OIL TEMP IND)
20
GND
19
18
17
16
15
12
10
4
6
14
13
2
1
3
5
E501-PU-18
E501-PU-18
C588-BR-18
C588-BR-18
C588-BR-18
142-BU-18
142-BU-18
955-BU-18
C599-OR-18
C599-OR-18
C599-OR-18
122-BU-14
616-BU-18
616-BU-18
877-YL-18
955-BU-18
323-WH-18
616-BU-18
616-BU-18
330-YL-18
129-BU
C576-BU-18
HEATER GP
169-3973
616-BU-18
103-RD-18
113-OR
200-BK
616-BU-18
A537-PK-18
11
12
10
512-GN-18
511-BR-18
509-WH-18
508-PU-18
9
200-BK-18
180-GN-18
8
7
C
5
3
1
2
6
4
8
7
200-BK-18
H414-YL-18
200-BK-18
616-BU-18
180-GN-18
180-GN-18
330-YL-18
E501-PU-18
607-PK-18
616-BU
122-BU-14
C589-GY-18
E535-GN-18
122-BU-14
180-GN-18
C588-BR-18
E501-PU-18
C589-GY-18 180-GN-18
C589-GY-18
E501-PU-18
C591-PK-18
E500-YL-18
D
E501-PU-18
C588-BR-18
142-BU-18
BLADE
RELAY 1
140-0866
200-BK-18
C589-GY-18
BLADE
RELAY 2
140-0866
E500-YL-18
E501-PU-18
D
C591-PK-18
142-BU-18
BLADE
FLOATING
RELAY
140-0866
142-BU-18
D
E500-YL-18
616-BU-18
200-BK-18
200-BK-18
C
ATCH
CAB LAMP
153-2521
323-WH-18
C576-BU-18
799-WH-18
168-GN-18
K776-GN-18
C577-GY-18
C576-BU-18
142-BU-18
142-BU-18
200-BK-18
103-RD-18
113-OR
168-GN-18
K776-GN-18
200-BK-18
142-BU-18
5
180-GN-18
122-BU-14
129-BU-14
129-BU-14
6
200-BK-18
817-WH-18
200-BK-18
F
615-YL
786-GN-18
142-BU-18
103-RD-18
112-PU-10
113-OR
129-BU-14
307-OR-18
A588-GN-18
105-RD-10
124-GN-14
791-PK-18
607-PK-18
616-BU
322-GY-18
320-RD-18
792-OR-18
118-RD
501-GN
500-BR
8
168-GN-18
121-YL-18
403-GN-18
107-RD-14
303-BR-18
150-RD-18
321-BR-18
799-WH-18
332-BU-18
151-GN-18
330-YL-18
310-PU-18
877-YL-18
J703-PK-18
403-GN-18
K776-GN-18
200-BK-18
4
1
2
3
180-GN-18
ATCH
SEAT HEATER SW
169-6840
1
180-GN-18
2
5
4
200-BK-18
616-BU-18
3
151-GN-18
A537-PK-18
200-BK-18
200-BK-18
168-GN-18
323-WH-18
200-BK-18
616-BU-18
142-BU-18
200-BK-18
616-BU-18
200-BK-18
616-BU-18
K778-WH-18
786-GN-18
799-WH-18
616-BU-18
200-BK-18
200-BK-18
142-BU-18
320-RD-18
791-PK-18
763-BU-18
129-BU-18
792-OR-18
506-PU-18
K776-GN-18
A537-PK-18
616-BU-18
200-BK-18
DIODE
121-1022
E455-OR-18
E454-PK-18
5
3
1
2
6
4
10
12
8
7
9
11
C
E
200-BK
447-PK-18
406-PU-18
405-GY-18
N933-PU-18
877-YL-18
113-OR-18
616-BU-18
799-WH-18
786-GN-18
321-BR-18
10
12
8
7
9
5
3
1
2
6
4
200-BK
G
G
G
WH
YL
BK
RD
200-BK
113-OR-18
G480-GN-18
G482-PK-18
G481-WH-18
3
1
2
4
RESISTOR
140-0924
200-BK
615-YL
L26
103-RD-18
113-OR
200-BK
616-BU-18
200-BK
615-YL
786-GN-18
BLOCK AS.
7Y-5499
511-BR-18
512-GN-18
508-PU-18
509-WH-18
200-BK-18
180-GN-18
616-BU-18
H414-YL-18
3
4
200-BK-18
5
2
1
ATCH
OVER LOAD
WARNING SW
169-6839
180-GN-18
200-BK-18
633-BU-18
441-OR-18
442-GY-18
210-BK
129-BU
C591-PK-18
321-BR-18
210-BK
NOTE A: USE WITH AM/FM RADIO.
786-GN-18
L18
L22
L19
L22
L23
L17
615-YL
786-GN-18
L17
L20
L19
L20
L19
L18
L10
L15
L16
L15
L17
L16
L8
L7L6
L13L9
L13
200-BK-18
F
500-BR
210-BK
139-OR-18
D
304-WH-10
877-YL-8
109-RD-8
101-RD-8
168-GN-18
200-BK
109-RD-10
306-GN-18
109-RD-10
877-YL-18
101-RD-10
101-RD-14
310-PU-18
J703-PK-18
330-YL-18
K776-GN-18
403-GN-18
151-GN-18
150-RD-18
WH
303-BR-18
200-BK-18
332-BU-18
327-PK-14
107-RD-14
500-BR
501-GN
118-RD
792-OR-18
190-PK
200-BK-18
320-RD-18
322-GY-18
200-BK-18
150-RD-18
121-YL-18
142-BU-18
FUEL AIR BLEED
168-GN-18
616-BU
200-BK-18
786-GN-18
180-GN-18
AUX CKT/SEAT HEATER
127-RD
607-PK-18
616-BU
115-RD
791-PK-18
500-BR
501-GN
320-RD-18
322-GY-18
114-RD-18
114-RD-18
101-RD-14
109-RD-10
101-RD-14
101-RD-10
190-PK
103-RD-18118-RD
118-RD
112-PU-10 112-PU-10
127-RD
L4
ATCH
CAB
LAMP RELAY
140-0866
303-BR-18
124-GN-14
607-PK-18
115-RD
127-RD
ENG SHUTDOWN SOL
791-PK-18
NEUTRAL
START LOCK
RELAY
140-0866
124-GN-14
105-RD-10
122-BU-18
YL
10A
10A
30A
15A
110-RD-14
A588-GN-18
CHASSIS/BOOM LAMP
WIPER
306-GN-18
118-RD
L4
307-OR-18
L7
WASHER/CIGAR
CAB LAMP
A588-GN-18
10A
15A
115-RD
109-RD-10
109-RD-10
10A
GOV ACTR
307-OR-18
10A
114-RD-18
129-BU-14
30A
15A
103-RD-18
TRAVEL ALARM
101-RD-10
110-RD-14
200-BK-18
113-OR
180-GN-18
WASHER/CIGAR
RELAY
140-0866
168-GN-18
112-PU-10
103-RD-18
MONITOR/CONVERTER
113-OR-18
200-BK-18
142-BU-18
200-BK-18
HORN
DOME LAMP
121-YL-18
10A
10A
L8
10A
10A
306-GN-18
307-OR-18
A588-GN-18
615-YL
190-PK
109-RD-10
107-RD-14
CHASSIS/BOOM
LAMP RELAY
140-0866
C588-BR-18
L9
124-GN-14
107-RD-14
792-OR-18
A/C HEATER
WIPER RELAY
140-0866
180-GN-18
105-RD-10
HORN RELAY
140-0866
112-PU-14
303-BR-18
HYD LOCK
KEY SW
105-RD-10
L1
791-PK-18
L2
607-PK-18
616-BU
322-GY-18
320-RD-18
792-OR-18
118-RD
SOLENOID
501-GN
500-BR
113-0R
HYD LOCK TIMER
150-RD-18
FUSE BASE
136-4072
142-BU-18
FUSE
10A 9W-1442
15A 9W-1441
30A 8T-9636
RELAY PANEL
7
200-BK
200-BK-18
200-BK
190-PK
327-PK-14
817-WH-18
190-PK
200-BK
817-WH-18
J703-PK-18
4
3
101-RD-14
101-RD-10
109-RD-10
306-GN-18
786-GN-18
109-RD-10
L1
E501-PU-18
C589-GY-18
C591-PK-18
L2
L6
OPERATOR STATION
403-GN-18
A588-GN-18
321-BR-18
799-WH-18
OPERATOR STATION
OPERATOR STATION
OPERATOR STATION
OPERATOR STATIONOPERATOR STATION
OPERATOR STATION OPERATOR STATION
RELAY PANEL
RELAY PANEL
RELAY PANELRELAY PANEL
506-PU-18
200-BK-18
616-BU-18
200-BK-18
616-BU-18
200-BK-18
792-OR-18
129-BU-18
200-BK-18
200-BK-18
616-BU-18
763-BU-18
791-PK-18
142-BU-18
200-BK-18
616-BU-18
817-WH-18
200-BK-18
118-RD
129-BU-18
BATTERY
3T-5760
113-OR
200-BK-18
K776-GN-18
200-BK-18
799-WH-18
180-GN-18
786-GN-18
615-YL
403-GN-18
ALTERNATOR
151-GN-18
142-BU-18
310-PU-18
332-BU-18
330-YL-18
877-YL-18
129-BU-14
320-RD-18
322-GY-18
113-OR
105-RD-10
112-PU-10
616-BU
607-PK-18
103-RD-18
124-GN-14
501-GN
791-PK-18
792-OR-18
500-BR
307-OR-18
A588-GN-18
403-GN-18
118-RD
7
8
4
6
2
1
3
5
11
9
7
8
12
10
4
6
2
1
3
5
11
9
7
8
12
10
K776-GN-18
519-PK-18
K777-GY-18
441-OR-18
405-GY-18
406-PU-18
EE
GG
KK
JJ
HH
GG
FF
EE
D
DDD
AA
CCC
C
C
168-GN-18
118-RD
A588-GN-18
307-OR-18
500-BR
792-OR-18
791-PK-18
501-GN
124-GN-14
A
C
A
MOTOR
103-RD-18
180-GN-18
C588-BR-18
112-PU-10
105-RD-10
K777-GY-18
200-BK-18
113-OR
322-GY-18
320-RD-18
129-BU
877-YL-18
C591-PK-18
332-BU-18
4
6
310-PU-18
2
1
GROUND STRAP
134-3344
K777-GY-18K777-GY-18
519-PK-18
190-PK-18
321-BR-18
ATCH
TRAVEL
PRESS. SW
106-0179
2
1
101-RD-6
109-RD-6
304-WH-10
877-YL-8
2
3
200-BK-18
142-BU-18
151-GN-18
K776-GN-18
WASHER
096-0486
1
K777-GY-18
441-OR-18
405-GY-18
406-PU-18
519-PK-18
190-PK
180-GN-18
K776-GN-18
200-BK
190-PK
180-GN-18
519-PK-18
406-PU-18
405-GY-18
441-OR-18
K777-GY-18
K776-GN-18
190-PK-18
101-RD-8
109-RD-8
817-WH-18
190-PK
877-YL-8
304-WH-10
109-RD-6
101-RD-6
200-BK
190-PK
K777-GY-18
101-RD-6
304-WH-10
327-PK-14
877-YL-8
406-PU-18
J703-PK-18
109-RD-6
403-GN-18
K776-GN-18
403-GN-18
327-PK-14
AA
A
441-OR-18
405-GY-18
877-YL-8
304-WH-10
BBCC
CHASSIS
109-RD-6
101-RD-6
190-PK-18
506-PU-18
ALT BREAKER
9S-0174
5
109-RD-6101-RD-6
BK-0
60A
POS
NEG NEG
POS
RD-0RD-0
2
1
501-GN
135-BU
112-PU-14
RD-0
BK-18
113-OR-18
BK-18
F
200-BK
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
190-PK-18
K776-GN-18
142-BU-18
405-GY-18
441-OR-18
403-GN-18
K776-GN-18
109-RD-6
J703-PK-18
406-PU-18
877-YL-8
327-PK-14
519-PK-18
200-BK-18
200-BK-18
405-GY-18
A
A
A
441-OR-18
403-GN-18
A
406-PU-18
A
A
A
AA
A
304-WH-10
101-RD-6
101-RD-6
MOTOR
L
E
B
P
R
ALT
GLOW PLUG
139-7841
ALTERNATOR
139-7850
COOLANT TEMP SENDER
095-3757
STARTER
139-7840
K776-GN-18
200-BK-6
ENG OIL PRESS. SW
5I-6587
ENG
SHUTDOWN SOL
139-8247
ATCH
SWING BOOM SW
168-9853
955-BU-18
1
ENG
A
109-RD-6
200-BK-6
200-BK
A
A
J703-PK-18
CHASSIS
2
200-BK-18
304-WH-10
519-PK-18
101-RD-6
A
304-WH-10
RD-0
327-PK-14
327-PK-14
T
COOLANT TEMP SW
085-5121
877-YL-8
519-PK-18
200-BK-18
D D
D
BK-0
5
4
3
RELAY PANEL
616-BU
E535-GN-18
616-BU-18
142-BU-18
200-BK-18
200-BK-18
142-BU-18
616-BU-18
C599-OR-18 3
4
5
2
1
BLADE SW
168-7741
142-BU-18
200-BK-18
F
F
MULTISWITCH JOYSTICK (RH)
168-8856
BLADE FLOATING SW
HAMMER SW
BLADE SW
E
ONE TOUCH LOW IDLE SW
DIODE
121-1022
E501-PU-18
L25
122-BU-14
A
B
NB
S
B
S
N
HORN
096-1491
S
122-BU-18
200-BK-14
L976-GN-18
ATCH
REFUELING
PUMP
175-4807
ATCH
REFUELING
START SW(NO)
6T-9442
R
N
N
323-WH-14
+
-
1
2
E454-PK-18
124-GN-14
180-GN-18
180-GN-18
BK
403-GN-18
200-BK-18
C599-OR-18
616-BU-18
142-BU-18
BU
200-BK-14
ATCH
REFUELING
RELAY 2
111-4871
ATCH
REFUELING
RELAY 1
111-4871
200-BK-14
200-BK-18
200-BK-18
200-BK-18
200-BK-18
122-BU-14
H415-BR-18
H414-YL-18
L25
HORN SW
200-BK-14
F
MED PRESSMED PRESS
SWING BOOM
MULTISWITCH JOYSTICK (LH)
168-8855
320-RD-18
200-BK-18
C599-OR-18
F
817-WH-18
327-PK-14
DD
403-GN-18
K776-GN-18
J703-PK-18
168-GN-18
C591-PK-18
142-BU-18
K776-GN-18
799-WH-18
817-WH-18
321-BR-18
121-YL-18
200-BK-18
PLATFORM
615-YL
C
D
F
107-RD-14
327-PK-14
CHASSIS
332-BU-18
121-YL-18
321-BR-18
817-WH-18
799-WH-18
303-BR-18
200-BK-18
150-RD-18
151-GN-18
330-YL-18
310-PU-18
101-RD-10
START RELAY
085-5200
HEATER RELAY
085-5353
109-RD-10
877-YL-8
306-GN-18
109-RD-8
109-RD-10304-WH-10
101-RD-8
E535-GN-18
GROUND STRAP
7G-1060
KK
JJ
HH
FF
CC
FF
A588-GN-18
E535-GN-18
D
D
D
D
101-RD-8
304-WH-10
109-RD-8
877-YL-8
11
9
7
8
12
10
4
6
2
1
3
A588-GN-18
A588-GN-18
11
9
7
8
12
10
4
6
2
1
3
200-BK-18
616-BU-18
E535-GN-18
200-BK-14
H415-BR-18
180-GN-18
506-PU-18
763-BU-18
C577-GY-18
799-WH-18
817-WH-18
321-BR-18
GND
D
122-BU-14
5
ATCH TRAVEL
ALARM TIMER
122-2371
K778-WH-18
5
320-RD-18
792-OR-18
129-BU-18
791-PK-18
C576-BU-18
142-BU-18
K778-WH-18
763-BU-18
506-PU-18
K776-GN-18
E535-GN-18
H415-BR-18
786-GN-18
C599-OR-18
799-WH-18
616-BU-18
180-GN-18
877-YL-18
200-BK-18
142-BU-18
E535-GN-18
+ BATTERY
ALARM
CANCEL
PRESS.
122-BU-18
C576-BU-18
122-BU-14
ATCH
SWING BOOM SOL
150-0738
C577-GY-18
A588-GN-18
791-PK-18
792-OR-18
129-BU-18
320-RD-18
200-BK-18
151-GN-18
121-YL-18
A588-GN-18
A588-GN-18
A588-GN-18
151-GN-18
101-RD-14
877-YL-18
101-RD-14
101-RD-10
109-RD-10
306-GN-18
109-RD-10
200-BK-18
200-BK-18
403-GN-18
K776-GN-18
330-YL-18
J703-PK-18
310-PU-18
BK
3
2
1
4
330-YL-18
C
HYD LOCK
TIMER
132-1817
151-GN-18
150-RD-18
200-BK-18
OUT 1
OUT 2
GND
200-BK-18
332-BU-18
BK-18
GN-18
BU-14
RD-14
J703-PK-18
330-YL-18
K776-GN-18
+B
+ BATTERY
403-GN-18
IN 1
GND
303-BR-18
GND
SOLENOID
ON (KEY)
200-BK-18
ENG SHUTDOWN
TIMER
138-5190
START CONT
RELAY
122-5545
327-PK-14
WH/BU
YL
BK
WH/YL
WH/GN
107-RD-14
P
L
R
S
GROUND
142-BU-18
616-BU-18
200-BK-14
200-BK
877-YL-18
E535-GN-18
200-BK-18
200-BK
200-BK
200-BK-14
1
129-BU
447-PK-18
129-BU
113-OR-18
616-BU-18
2
3
4
5
6
D
N933-PU-18
A537-PK-18
D
D
C599-OR-18
1
2
B
ATCH MEDIUM PRES.
SOL
165-4301
B
2
1
616-BU-18
616-BU-18
2
A588-GN-18
1
616-BU-18
616-BU-18
PP
ATCH
REFUELING SW
5C-6108
616-BU-18
325-PK-18
BPP
1
2
323-WH-18
A588-GN-18
325-PK-18
200-BK-14
200-BK-18
122-BU-14
3
1
2
C576-BU-18
A537-PK-18
200-BK-18
C577-GY-18
C589-GY-18
C591-PK-18C591-PK-18
C589-GY-18
C577-GY-18
325-PK-18
C576-BU-18
200-BK-18
YL
ATCH
SEAT WITH
SEAT HEATER
111-6458
200-BK-18
615-YL
200-BK
200-BK
200-BK-18
180-GN-18
H
405-GY-18
447-PK-18
L25
200-BK
142-BU-18
142-BU-18
BK
H414-YL-18
H415-BR-18
A537-PK-18
A588-GN-18
616-BU-18
200-BK-18
200-BK-18
C591-PK-18
RD
BK
C589-GY-18
C576-BU-18
200-BK-18
C577-GY-18
DISCONNECT
SW
7N-0718
325-PK-18
C589-GY-18
200-BK-18
C589-GY-18
200-BK-18
C591-PK-18
442-GY-18
200-BK-18
C577-GY-18
135-BU
PLATFORM
C
RD
135-BU
200-BK-18
506-PU-18
122-BU-14
7
8
180-GN-18
4
6
2
1
3
5
321-BR-18
323-WH-18
200-BK-18
C576-BU-18
200-BK-18
2
142-BU-18
C589-GY-18
E501-PU-18
C588-BR-18
122-BU-14
C591-PK-18
103-RD-18
200-BK-18
406-PU-18
1
441-OR-18
442-GY-18
ATCH HAMMER SOL.
121-6303
122-BU-14
C589-GY-18
C591-PK-18
C577-GY-18
200-BK-18
615-YL
C591-PK-18
C589-GY-18
C577-GY-18
C576-BU-18
H415-BR-18
5
3
1
2
6
4
C
E
615-YL
442-GY-18
L24
129-BU-14
FUSE
132-1862
200-BK-18
103-RD-18
B E
D
C
D
C
103-RD-18
H740-OR
H741-WH
H742-PU-18
H743-YL-18
H744-BU-18
H745-BR-18
H745-BR-18
H744-BU-18
H743-YL-18
H742-PU-18
H741-WH
H740-OR
H740-OR
H741-WH
H742-PU-18
H743-YL-18
H744-BU-18
H745-BR-18
616-BU
322-GY-18
607-PK-18
200-BK-18
441-OR-18
877-YL-18
330-YL-18
405-GY-18
616-BU-18
105-RD-10
307-OR-18
310-PU-18
112-PU-10
332-BU-18
190-PK
K777-GY-18
113-OR-18
501-GN
500-BR
118-RD
320-RD-18
129-BU-18
792-OR-18
791-PK-18
151-GN-18
A588-GN-18
142-BU-18
506-PU-18
616-BU-18
200-BK-18
200-BK-18
200-BK-18
200-BK
200-BK
200-BK-18
200-BK-18
K778-WH-18
118-RD
500-BR
501-GN
103-RD-18
C599-OR-18
C576-BU-18
C577-GY-18
H415-BR-18
K777-GY-18
190-PK
332-BU-18
112-PU-10
310-PU-18
307-OR-18
105-RD-10
616-BU-18
406-PU-18
405-GY-18
330-YL-18
877-YL-18
441-OR-18
113-OR
607-PK-18
322-GY-18
616-BU
616-BU
322-GY-18
607-PK-18
447-PK-18
K778-WH-18
763-BU-18
442-GY-18
C576-BU-18
H415-BR-18
A
C599-OR-18
E501-PU-18
955-BU-18
C588-BR-18
142-BU-18
105-RD-10
307-OR-18
310-PU-18
112-PU-10
332-BU-18
B786-BU-18
D813-OR-18
763-BU-18
200-BK-18
200-BK
190-PK
K777-GY-18
B786-BU-18
D813-OR-18
330-YL-18
113-OR
103-RD-18
405-GY-18
103-RD-18
501-GN
500-BR
118-RD
519-PK-18
122-BU-14
C591-PK-18
C589-GY-18
C577-GY-18
200-BK
H415-BR-18
200-BK-18
L24
E501-PU-18
105-RD-10
307-OR-18
310-PU-18
124-GN-14
112-PU-10
332-BU-18
C588-BR-18
142-BU-18
C599-OR-18
118-RD
500-BR
501-GN
103-RD-18
N933-PU-18
B786-BU-18
D813-OR-18
K777-GY-18
190-PK
200-BK
200-BK-18
330-YL-18
113-OR-18
200-BK
113-OR
129-BU
103-RD-18
200-BK
501-GN
500-BR
615-YL
142-BU-18
142-BU-18
519-PK-18
D813-OR-18
B786-BU-18
332-BU-18
112-PU-10
310-PU-18
307-OR-18
105-RD-10
C
103-RD-18
406-PU-18
441-OR-18
511-BR-18
RELAY PANEL
L21
124-GN-14
C577-GY-18
4
6
2
1
3
5
955-BU-18
142-BU-18
B786-BU-18
D813-OR-18
C589-GY-18
406-PU-18
H745-BR-18
H744-BU-18
H743-YL-18
H742-PU-18
H741-WH
H740-OR
E501-PU-18
C588-BR-18
122-BU-14
200-BK-18
180-GN-18
C591-PK-18
11
9
7
8
12
10
4
6
2
1
3
5
442-GY-18
763-BU-18
K778-WH-18
447-PK-18
607-PK-18
322-GY-18
616-BU
H740-OR
H741-WH
H742-PU-18
H743-YL-18
H744-BU-18
H745-BR-18
C
E
512-GN-18
509-WH-18
508-PU-18
L21
K776-GN-18
323-WH-18
321-BR-18
11
200-BK-18
RELAY PANEL
L10
L9
L12
L12
L11
L11
406-PU-18
441-OR-18
L11
321-BR-18
L24
323-WH-18
1
2
2
1
1
2
B
B
B
2
1
B
323-WH-18
616-BU
322-GY-18
607-PK-18
447-PK-18
K778-WH-18
200-BK
763-BU-18
442-GY-18
200-BK-18
447-PK-18
200-BK-18
C588-BR-18
CHASSIS
E501-PU-18
C599-OR-18
442-GY-18
K778-WH-18
TRAVEL SPEED
SOL
126-9992
200-BK-18
HYD OIL
TEMP SENDER
096-4643
763-BU-18
BK
607-PK-18
200-BK-18
K778-WH-18
200-BK-18
ATCH
FUEL PUMP
103-0367
447-PK-18
200-BK-18
200-BK-18
200-BK-18
ENG/PUMP CONT
SOL
126-9992
K778-WH-18
MOTOR
763-BU-18
447-PK-18
200-BK
442-GY-18
616-BU
442-GY-18
322-GY-18
200-BK-18
763-BU-18
BK/YL
K778-WH-18
447-PK-18
103-RD-18
200-BK
T
615-YL
118-RD
500-BR
501-GN
B
BK
BK
B
FUEL
SENSOR
105-9911
BK
YL
321-BR-18
200-BK-18
ATCH
TRAVEL ALARM
3E-7738
763-BU-18
151-GN-18
4
142-BU-18
E535-GN-18
E535-GN-48
129-BU
200-BK-18
BU
200-BK-18
A588-GN-18
616-BU-18
200-BK-18
200-BK-18
168-GN-18
323-WH-18
200-BK-18
616-BU-18
200-BK-18
616-BU-18
200-BK-18
616-BU-18
K778-WH-18
786-GN-18
799-WH-18
616-BU-18
142-BU-18
200-BK-18
BK
GY
200-BK-18
616-BU-18
200-BK-18
142-BU-18
791-PK-18
763-BU-18
616-BU-18
200-BK-18
200-BK-18
129-BU-18
792-OR-18
200-BK-18
616-BU-18
200-BK-18
616-BU-18
168-GN-18
323-WH-18
B
A
BR
2
C
F
F
F
F
F
F
F
F
WH
F
F
NEUTRAL START
LIMIT SW
111-4799
151-GN-18
A588-GN-18
C
B
A
E535-GN-18
142-BU-18
C576-BU-18
C577-GY-18
A588-GN-18
A588-GN-18
200-BK-18
616-BU-18
799-WH-18 WH
YL
BK
BU
3
1
5
4
2
ATCH
TRAVEL ALARM
CANCEL SW
136-4004
3
4
5
2
1
RD
BK
YL
BU
WH
BK
YL
RD
3
1
5
4
2
WH
3
4
RD
2
BK
5
YL
1
WH
3
4
5
1
200-BK-18
506-PU-18
786-GN-18
142-BU-18
K778-WH-18
2
YL
BK
616-BU-18
POWER
MODE SW
136-4003
ATCH CAB
LIGHT SW
136-3998
WASHER SW
136-4000
200-BK-18
616-BU-18
WIPER SW
136-3999
200-BK-18
616-BU-18
200-BK-18
792-OR-18
GN
616-BU-18
200-BK-18
129-BU-18
BU
RD
616-BU-18
200-BK-18
ATCH AIR
BLEED SW
136-4001
3
1
5
4
2
WH
YL
BK
BU323-WH-18
168-GN-18
G
506-PU-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
LIGHT SW
(BOOM LAMP)
136-3998
TRAVEL
SPEED SW
136-4002
616-BU-18
2
763-BU-18
791-PK-18
142-BU-18
1
5
4
3
WH
YL
BK
RD
WH
YL
BK
RD
1
2
5
4
3
200-BK-18
616-BU-18
HYD LOCK SOL
121-1491
200-BK-18
A588-GN-18
2
1
ATCH
CIGAR
LIGHTER
9W-0335
200-BK
200-BK-18
SERVICE
METER
6T-7337
+
-
K776-GN-18
122-BU-14
365-YL-18
L976-GN-18
325-PK-18
365-YL-18
R
P
F
2
1
R
ATCH
REFUELING
STOP SW(NC)
9X-4184
365-YL-18
L976-GN-18
L976-GN-18
365-YL-18
L976-GN-18
1
2
2
1
325-PK-18 325-PK-18
F
C
H415-BR-18
200-BK-18
N
OVER LOAD WARNING
PRESS. SW
135-7748
N
B J
1
2
200-BK-18
H415-BR-18
J
P
J
200-BK
615-YL615-YL
H
4
6
2
1
3
5
E
M
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
M
M
127A
T
H M
ATCH
CAB LAMP
153-2521
H745-BR-18
H744-BU-18
H743-YL-18
H742-PU-18
H741-WH
L13
WH
GN
OR
YL
BK
PK
615-YL
N
615-YL
M
615-YL
KNOB
7Y-9390
KEY SW
7Y-3918
ENG GOV ACTR
132-7818
E
H
H740-OR
332-BU-18
112-PU-10
310-PU-18
307-OR-18
105-RD-10
OFF
PREHEATBR
R1
B
WH/BK-20
BU/BK-20
BU-20
BU/WH-20
C
615-YL
R2
+
S
+1
-
MOTOR
ACC
START
ON
WIPER
124-5679
501-GN
118-RD
500-BR
200-BK
323-WH-18323-WH-18
321-BR-18321-BR-18
K
325-PK-18
200-BK-18
D
D
L8
L7
113-OR-18
113-OR-18
442-GY-18
441-OR-18
616-BU-18
113-OR-18
877-YL-18
N933-PU-18
405-GY-18
REFUELING PUMP
122-BU-14
C591-PK-18
406-PU-18
447-PK-18
L6
CAB
142-BU-18
142-BU-18
509-WH-18
200-BK
200-BK-18
508-PU-18
200-BK
200-BK-18
200-BK-18
321-BR-18
129-BU
511-BR-18
ATCH OVER LOAD
WARNING RELAY
111-4871
200-BK-18
E455-OR-18
F
F
512-GN-18
200-BK
118-RD
200-BK-18
320-RD-18
7
8
4
6
2
1
3
5
KK
JJ
C
C
WIRE AS.
GG
24V IN
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
THIS SCHEMATIC IS FOR THE 307B-SWING BOOM EXCAVATOR.
ATCH
SPEAKER(LH)
113-4071
NOTE A
AA
CABLE AS.
H
330-YL-18
509-WH-18
A
12V OUT(FUEL IND)
508-PU-18
B
KB
DESCRIPTION
SYMBOL
CONNECTOR
ELECTRICAL CONNECTION
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
H
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
ATCH
SPEAKER(RH)
113-4071
NOTE A
L#
511-BR-18
512-GN-18
CIRCUIT GROUPING
DESIGNATION
IDENT PART NO. LOC
HARNESS AS.
3
1
C589-GY-18
ATCH
BOOM LAMP(LH)
153-2521
200-BK-18
200-BK
190-PK
K777-GY-18
N933-PU-18
B786-BU-18
D813-OR-18
CONTROLLER
132-7764
322-GY-18
615-YL
200-BK
4
6
2
1
3
5
616-BU
200-BK
616-BU
12V OUT(HYD OIL TEMP IND)
200-BK
CHASSIS LAMP
153-2521
K
200-BK
12V OUT(COOLANT TEMP IND)
616-BU
FF
EE
D
CC
M
K
H
G
F
HH
134-3322
134-3321
153-2583
134-3318
153-2582
134-3320
F-7
F-7
F-7
F-7
F-7
F-7
E
D
C
B
171-1396
172-6672
180-5077
169-3497
137-1840
143-1571
171-1435
171-1436
169-6665
169-6664
169-0582
169-3499
169-3498
C-2
B-2
A-2
F-7
E-1
B-3
C-5
C-5
H-4
E-4
F-7
E-8
A-6
BB
H740-OR
H741-WH
H742-PU-18
H743-YL-18
H744-BU-18
H745-BR-18
200-BK-18
607-PK-18
ATCH
BOOM LAMP(RH)
153-2521
ATCH OVER LOAD
WARNING BUZZER
113-4683
H
DD
134-3306
143-1579
134-3307
153-2567
D-9
D-9
D-9
D-9
403-GN-18
G
9 8 7 6 5 4 3 2 1
9 8 7 6 5 4 3 2 1
TO MACHINE STRUCTURE
(143-1558 H 01)
CONN 1
CONN 2
CONN 3
CONN 4 CONN 5
CONN 6
CONN 9
CONN 8
CONN 7
CONN 11
CONN 12
CONN 13
CONN 10
CONN 14 CONN 15
CONN 16 CONN 17
CONN 18
CONN 19
CONN 20
CONN 21
CONN 25
CONN 22
CONN 23
CONN 24
D
E
F
C
B
A
G
H
J
D
E
F
C
B
A
G
H
J
10A
10A
10A
10A
10A
15A
NOTE B: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
S
R
116-0098
116-0096
A-3
A-3
GOVERNOR PRESSURE SW
106-0179
MOTBAT
S
ATCH A/C CLUTCH SOL
3E-1906
ATCH REFRIGERANT
( LOW PRESS SW )
114-5333
( NOTE B )
513-OR-18
519-PK-18
2
1
2
1
200-BK-18
513-OR-18
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE SYSTEM VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE SYSTEM VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
MONITORING CIRCUIT.
PANEL LAMP CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE CONTROL CIRCUIT.
START AID CIRCUIT.
