Component Identifier (CID¹) List Trans Control
MID14(Product) MID13(Retrofit)
CID
Component
168 Electrical System
641 Solenoid #1 (Rev)
642 Solenoid #2 (Fwd)
643 Solenoid #3 (Sp4)
644 Solenoid #4 (Sp1)
645 Solenoid #5 (Sp2)
646 Solenoid #6 (Sp3)
650 Harness Code
668 Shift Lever
683 Parking Brake Alarm
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.
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Backup A-9 1 Resistor - Blower (Heater) D-4 13
Alarm - Park Brake C-6 A Resistor - Key Start D-7 A
Alternator B-2 2 Sender - Converter B-2 14
Battery A-3 3 Sender - Coolant C-1 15
Beacon - Fixed E-9 4 Sender - Fuel F-4 16
Beacon - Fixed F-9 4 Solenoid - A/C Clutch D-1 17
Beacon - Magnetic F-9 4 Solenoid - Bucket Positioner A-4 8
Breaker - Acc Relay B-8 A Solenoid - Engine Shutdown E-2 18
Control - Shift D-5 5 Solenoid - Front Drive C-3 19
Control - Transmission A-5 6 Solenoid - No. 1 (Reverse) B-2 14
Diode Block As E-5 B Solenoid - No. 2 (Forward) C-2 14
Flasher C-7 A Solenoid - No. 3 (Fourth Gear) C-2 14
Fuses F-5 A Solenoid - No. 4 (First Gear) C-2 14
Fuses C-9, D-9 A Solenoid - No. 5 (Second Gear) C-2 14
Gauge - Converter Temp D-8 A Solenoid - No. 6 (Third Gear) C-2 14
Gauge - Coolant Temp E-8 A Solenoid - Start Aid A-2 7
Gauge - Fuel D-9 A Starter A-2 20
Gauge - Voltmeter D-8 A Switch - Beacon E-7 A
Horn - Forward A-2 7 Switch - Blower F-5 9
Lamp - Action A-7 8 Switch - Brake C-2 21
Lamp - Air Inlet Heater D-7 A Switch - Brake (2) E-4 22
Lamp - Brake Fluid D-3 B Switch - Coolant C-2 15
Lamp - Coolant Temp E-3 B Switch - Engine Oil C-2 23
Lamp - Engine Oil Pressure E-3 B Switch - Flood Lamp (Front) E-7 A
Lamp - Front Drive D-3 B Switch - Flood Lamp (Rear) E-7 A
Lamp - Left Turn Indicator E-3 B Switch - Flood Lamp (Rear) E-9 A
Lamp - Park Brake E-3 B Switch - Forward Horn D-3 B
Lamp - Primary Steer D-3 B Switch - Front Drive D-3 B
Lamp - Right Turn Indicator E-3 B Switch - Heater Blower E-4 13
Lamp - Start Aid D-7 A Switch - Key Start D-7 A
Meter - Service D-8 A Switch - Park Brake D-6 24
Motor - Blower D-4 9 Switch - Primary Steer C-3 B
Motor - Blower E-6 9 Switch - Refrigerant F-1 17
Motor - Fan As F-7 10 Switch - Return to Dig A-3 25
Motor - Wiper (Front) E-3 9 Switch - Running Lamp E-7 A
Motor - Wiper (Rear) E-9 11 Switch - Start Aid C-2 A
Relay - A/C C-9 A Switch - Start Aid D-7 A
Relay - Air Inlet Heater B-2 14 Switch - Thermostat E-6 9
Relay - Accessory C-7 A Switch - Turn/Hazard F-3 B
Relay - Cab C-9 A Switch - Wiper (Front) D-6 A
Relay - Lamp Check C-7 A Switch - Wiper (Rear) E-6 A
Relay - Main C-8 A Switch - XMSN Neutralizer B-6 A
Relay - Park Brake Alarm C-7 A Tachometer D-9 A
Relay - Start C-8 A As.-Timer C-7 A
Resistor - Blower (A/C) E-5 12
Machine location are repeated for components located close together
A = Operator Compartment - Right Console
B = Operator Compartment - Front Dash
Connector Location¹
Connector Number
Schematic
Location
Machine
Location
CONN 1 A-8 6
CONN 2 B-8 26
CONN 3 B-8 26
CONN 4 B-8 26
CONN 5 B-9 26
CONN 6 B-9 6
CONN 7 B-9 6
CONN 8 B-6 6
CONN 9 B-6 6
CONN 10 C-6 26
CONN 11 A-7 8
CONN 12 A-6 8
CONN 13 E-4 27
CONN 14 C-4 26
CONN 15 B-4 26
CONN 16 B-4 26
CONN 17 A-4 26
¹ 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 a component. See the Component Location Chart.
Diagnostic Code Conversion
Code Flashed CID-FMI Description
11
No Active
Faults
Not Applicable
12
No Inactive
Faults
Not Applicable
31 641-05 Solenoid 1 Open Circuit
32 642-05 Solenoid 2 Open Circuit
33 643-05 Solenoid 3 Open Circuit
34 644-05 Solenoid 4 Open Circuit
35 645-05 Solenoid 5 Open Circuit
36 646-05 Solenoid 6 Open Circuit
37 683-05
Parking Brake Alarm Relay Open
Circuit
41 641-06 Solenoid 1 Short to Ground
42 642-06 Solenoid 2 Short to Ground
43 643-06 Solenoid 3 Short to Ground
44 644-06 Solenoid 4 Short to Ground
45 645-06 Solenoid 5 Short to Ground
46 646-06 Solenoid 6 Short to Ground
47 683-06
Parking Brake Alarm Relay Short to
Ground
51 641-03 Solenoid 1 Short to + Battery
52 642-03 Solenoid 2 Short to + Battery
53 643-03 Solenoid 3 Short to + Battery
54 644-03 Solenoid 4 Short to + Battery
55 645-03 Solenoid 5 Short to + Battery
56 646-03 Solenoid 6 Short to + Battery
57 683-03
Parking Brake Alarm Relay Short to
Battery
69 668-02 Invalid Shift Lever Input
71 168-00 System Voltage Above Normal
72 168-01 System Voltage Below Normal
73 650-02 Invalid Harness Code
Failure Mode Identifiers (FMI)
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.
The FMI is a diagnostic code that indicates what type of failure has
occurred.
Related Electrical Service Manuals
Title Form No.
Alternator SENR3685
3E-7295 (Std 55A)
9X-0341 (Att 90A)
Starting Motor 111-9860 SENR3828
Transmission and Shift Control SENR5856
Resistor,Sender, And Solenoid Specifications
Part No
Component
Resistance (Ohms)¹
7T-3828 Resistor - A/C Blower Overall - 1.0 ± .1; Tap - .5
8C-4110 Resistor - Key Switch 22 ± 1.1
102-346 Solenoid - A/C Clutch 3.5 ± 0.15
3E-8620 Solenoid - Bucket Positioner 32.1
6T-6885 Solenoid - Front Drive 8.9 ± 0.3
3T-9493 Solenoid - Start Aid 1.5
¹At room temperature.
Off Machine Switch Specification
Part No.
Function
Actuate
Deactuate
Contact Position
9W-1519 Coolant 689 kPa ± 103 kPa 415 kPa 1-2 Normally Open
(100 psi ± 14.9 psi) (60.2 psi) 1-3 Normally Closed
9X-3395 Primary Steer .25Nm to .43Nm -- Normally
(.19 lb ft to .32 lb ft) -- Open
114-5333 Refrigerant Pressure 275 to 1750 kpa¹ -- Normally ²
(40 to 255 psi) -- Open
138-7008 Start Aid 0 °F 10 °F to 25 °F A-C Normally Closed
32 °C (-12.2 °C to -3.9 °C) A-B Normally Open
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 condition
can be maintained down to 170 kpa (25 psi).
² Contact position at the contacts of the harness connector.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits Accessory Circuits
101 RD Bat (+) 500 BR Wiper - Front (Park)
102 BU Hd Lmp 501 GN Wiper - Front (Lo)
103 YL Aux Ckt 502 OR Wiper - Front (Hi)
105 BR KEY SW 503 BR Wiper - Rear (Park)
109 OR Alt Output (+) Term. 504 YL Wiper - Rear (Lo)
112 PU Main Power Rly Output 505 BU Wiper - Rear (Hi)
113 OR Opr Mon Panel VMIS B+ Switched 513 OR A/C Compressor/Refrigerant Press Sw
116 BR Aux Ckt 515 GY Blower Motor (Hi)
118 GY Aux Ckt 516 GN Blower Motor (Medium)
119 PK Aux Ckt 517 BU Blower Motor (Lo)
120 YL Aux Ckt 520 WH Opr A/C Sw to Thermostat/Fuse
121 YL Bckp Alarm to Lamp 521 YL A/C Sw to Refrigerant Sw
122 BU Aux Ckt 522 WH A/C Clutch to Thermostat Sw
123 WH Aux Ckt 536 WH Hazard Sw to Turn Sw
124 GN A/C 552 WH Four Wheel Drive Sol
126 PK XMSN Ctrl 568 GN Warning Buzzer to Diodes
128 PK Aux Ckt Lighting Circuits
143 BR Aux Ckt 603 PK Rotary Beacon
157 YL Aux Ckt 604 OR Stop Lamp
161 PK Aux Ckt 605 YL Turn Lamp - Left
194 GN Aux Ckt 606 GY Turn Lamp - Right
Ground Circuits 608 GN Flood Lamp - Rear
200 BK Main Chassis 610 OR Head Lamp Basic
202 BK XMSN Ctrl 614 PU Park/Tail/Dash Lamp
276 BK XMSN Ctrl Ident Code 0 617 BR Tail/Position Lamp - Left (Road Pkg)/Width
277 BK XMSN Ctrl Ident Code 1 618 YL Tail/Position Lamp - Right (Road Pkg)/Width
278 BK XMSN Ctrl Ident Code 2 620 WH Flood Lamp - Front
279 BK XMSN Ctrl Ident Code 3 630 GY Flood Lamp Rear (Attach)
280 BK XMSN Ctrl Ident Code 4 639 WH Left Hand Stop/Tail Lamp
281 BK XMSN Ctrl Ident Code 5 640 GN Right Hand Stop/Tail Lamp
Basic Machine Circuits Control Circuits
301 BU Starter No. 1 Sol 720 PU XMSN Brake Sw
303 BR Key Sw Acc Position 751 GN XMSN Shift Sol No. 1 or 3
304 WH Starter Rly No. 1 Output 752 YL XMSN Shift Sol No. 2
306 GN Starter Rly Coil to Neut Start Sw or Key Sw 754 BU XMSN Shift Sol No. 3 or 1
307 OR Key Sw to Neut Start Sw or VMIS Sensor Module 755 OR XMSN Shift Sol No. 4 or 5
308 YL Main Power Rly Coil 762 YL Bucket Positioner Sol Sw
309 GY Alt Regulator Term. 900 PU XMSN Shift Sol No. 5 or 4
310 PU Start Aid Sw to Start Aid Sol 901 WH XMSN Shift Sol No. 6
311 WH Start Aid Sol to Temp Sw 944 OR Data Link + (CAT)
321 BR Bckp Alarm Lamp TRAVEL Alarm 945 BR Data Link - (CAT)
322 GY Warning Horn (Forward) 958 YL Relay Logic
326 PU Key Sw "C" Term. 965 WH Trans Sol 1 Sw to Gnd (Fwd Hi:CST, Rev:LRT)
Monitoring Circuits 966 GY Trans Sol 3 Sw to Gnd (Fwd Lo:CST, 4th:LRT)
405 GY Opr Mon Oil Press. (Lo Setting) 968 BR Trans Sol 2 Sw to Gnd (Rev:CST, Fwd:LRT)
406 PU Opr Mon Coolant Temp 969 YL Trans Sol 3 Sw to B+ :CST, for LRT Sol 2
409 OR Opr Mon Neut 970 GN Trans Sol 4 Sw to Gnd (Spd1:CST, 3rd:LRT)
415 GN Opr Mon Test Sw 971 YL Trans Sol 5 Sw to Gnd
415 GN Opr Mon Test Sw 972 BU Trans Sol 6 Sw to Gnd (Spd3:CST, 1st:LRT)
417 GY Primary Ster SW 975 WH Cst Autoshift - Sol Return
419 YL Opr Mon Parking Brake C920 GY Action Lamp - Control
441 OR Eng Coolant Temp Gauge E999 GN Reverse Parity (Sol 1 to B+)
443 YL Power Train Temp Gauge
447 PK Fuel Level Gauge
450 YL Tach Sender (+)
483 BR Brake Fluid Level
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
1
2
17
18
19
20
21
22
23
24
7
25
26
27
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
1
2
17
18
19
20
21
22
23
24
7
25
26
27
Machine Harness Connector And Component Locations
D85129
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
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
SENR5852-01
March 1999
446B Backhoe Loader
Electrical System
5BL1500-UP
©
1999 Caterpillar
All Rights Reserved
Printed in U.S.A.
3 2
1
6 5 49 8
7
C
B
A
D
E
F
23
1
456
7
89
C
B
A
F
E
D
200-BK
POWER
122-BU-12
122-BU-12
30
C593-OR
86
87a
87
200-BK-12
200-BK
C593-OR
J
J
SEAT RELAY
3E-9362
C
B
A
WH
200-BK-12
200-BK-12
106-8704
DFF
FF
B-2FF
E
AIR INLET HEATER
160-PU-4
D
155-4911
INLET AIR
HEATER RELAY
117-9080
03104-5467
B-2GG 00110-2706
TIMER
AS.
138-7009
RELAY
HEAT SW
BAT NEG
BAT POS
YL
142-3025
AIR COND - ATCHD-200142-3026W
W
MW
W
W
513-OR
521-YL
513-OR
521-YL
522-WH
BRAKE SW
105-8034
NOTE B
~T
C
KEY SW
110-7883
202-BK
140-6193
419-YL
202-BK
A/C
382-PK
382-PK
D
DUAL BEACON - ATCH
WIPERS - ATCH
FRAME00
140-6193
ENGINE
CANOPY
161-PK
L990-GN
F793-OR
126-PK
E
A/C
126-PK-16
F874-PK
F793-OR
L990-GN
L990-GN
382-PK
382-PK
FLOOD
LAMP
107-1301
382-PK
200-BK
F793-OR
L990-GN
F793-OR
F874-PK
12
11
10
9
8
7
6
5
4
3
2
382-PK
200-BK
308-YL
200-BK
L987-WH
L990-GN
L990-GN
F874-PK
200-BK
308-YL
4
3
2
1
F874-PK
8
202-BK
945-BR
944-OR
126-PK
J
H
G
F
C
B
E
D
A
7
2
200-BK
1
101-RD-6
200-BK
F793-OR
6
200-BK
160-PU-4
382-PK
L987-WH
F874-PK 5
F874-PK
L987-WH
4
L45
L45
L45
3
2
1
382-PK
F793-OR
128-6984
E
200-BK
200-BK
05
HEATER BLOWER - ATCH
140-7602
D-4
PRI STEER LMP - ATCH
E
ACTION
LAMP
3E-8679
126-PK
126-PK
200-BK
101-RD-10
128-6984
200-BK
200-BK
B
B
G
G
101-RD-10
H
104-5687
307-OR
200-BK
200-BK
L987-WH
E
CODE
PLUG
101-RD-6
F793-OR
382-PK
L11
L11
(105-3504 CH03)
L11
L18
L25
L12
L12
L22
L23
L30 L30
L30
L34
L34
L35
L35
L35
L35
L36
L36
L36
L36
L36
L37
L37L37
L37
L38
L39
L990-GN
D-2
GN
F-9
200-BK
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
02
H
H
H
BK
112-PU-10
BEACON AS - ATCH
200-BK
MAG BEACON - ATCH
200-BK
A/C BLOWER - ATCH
CODE PLUG
F-9
01
FRONT CONSOLE
SIDE CONSOLE
POWER SEAT
PLATFORM03
200-BK
139-4608
L18
200-BK
617-BR
K
161-PK
H
120-YL-12
141-5903
B
126-PK-16
H
AIR INLET
HEATER LAMP
B
START
AID LAMP
307-OR
200-BK
200-BK
200-BK
161-PK-16
H
TACHOMETER
202-BK
200-BK
304-WH-10
START
RELAY
3E-9362
PRI STEER - ATCH
617-BR
101-RD-10
200-BK
L987-WH
119-PK
502-OR
501-GN
500-BR
504-YL
505-BU
202-BK
118-GY
536-WH-16
102-BU
503-BR
101-RD-12
M
ACC RELAY
3E-9362
304-WH-10
H
H
H
87
87a
87a
87
30
86
85
536-WH-16
202-BK
303-BR
200-BK
03
L41
B
308-YL
308-YL
308-YL
M
105-BR-16
415-GN
PARK BRAKE ALARM
RELAY
3E-9362
137-9647
RD
200-BK
101-RD-10
306-GN
307-OR
LAMP CHECK
RELAY
3E-9362
K
308-YL
202-BK-16
308-YL-16
K
382-PK
K
200-BK
309-GY
614-PU
308-YL
161-PK-16
143-BR
200-BK
200-BK
308-YL
102-BU
102-BU-16
304-WH-10
101-RD-10
101-RD-10
TRANSMISSION
NEUTRALIZER SW
8Y-7237
PARK BRAKE
ALARM
110-8046
E
H
620-WH-16
610-OR-16
603-PK
608-GN-16
630-GY-16
441-OR
443-YL
447-PK
450-YL
139-4607
L987-WH
309-GY
200-BK-16
536-WH-16
161-PK-16
307-OR
415-GN
H
306-GN
H
128-PK
113-OR
143-BR
126-PK
618-YL
143-BR
415-GN
1
H
2
103-YL-16
157-YL
C
101-RD-12
202-BK
958-YL
103-YL-16
568-GN
L1
202-BK-14
K
958-YL
382-PK
202-BK
103-YL-16
L40
113-OR
H
H
E
FIXED
BEACON
E
VOLTMETER
K
REFRIGERANT SW
114-5333
NOTE A
A
A
303-BR
A
112-PU-10
200-BK
K
E
H
E
136-7821
K
103-YL-10
E
B
B
200-BK
MAIN
RELAY
3E-9362
101-RD-10
BUCKET
POSITIONER
SW
30
30
87
A/C
RELAY
3E-9362
568-GN
12
87
87a
87a
85
85
3
FIXED
BEACON
L41
K
L35
86
86
11
10
9
8
7
6
5
4
XMSN CONTROL
WIPER MOTORS - ATCH
306-GN
FLOOD
LAMP
107-1301
3
2
1
K
K
309-GY
12
11
10
9
202-BK-14
450-YL
4
5
958-YL
6
BACKUP
ALARM
102-9236
415-GN
H
307-OR
T
S
STOP/
TAIL
LAMP
3E-7398
FLOOD
LAMP
107-1301
640-GN
618-YL
200-BK
441-OR
630-GY
326-PU
202-BK
202-BK
194-GN-10
568-GN
443-YL
FLOOD
LAMP
107-1301
103-YL-16
L987-WH
BRAKE SW
105-8034
NOTE B
8
200-BK
608-GN
7
128-PK
161-PK-16
STOP LAMPS
HAZARD LAMPS
85
568-GN
H
M
308-YL
121-YL
86
30
87
536-WH-16
87a
H
AIR
CONDITIONER
CLUTCH SOL
3E-1908
30
86
85
202-BK
H
H
113-OR
116-BR-12
119-PK
113-OR
K
10A
XSMN CONTROL
M
H
101-RD-10
112-PU-10
10A
200-BK
FLOOD
LAMP
107-1301
OPERATOR STATION
RESISTOR
8C-4110
307-OR
15A
DIODE
8C-5444
15A
ACC
A
ST
ON
OFF
B
S
6
5
FRONT DRIVE
4
321-BR
3
49A
BACKUP ALARM/BEACON
OUT (LAMP)
+ BATTERY
GROUND
31
49
30
86
2
FLASHER
7T-4848
1
157-YL
MONITOR LAMPS
122-BU-12
12
ACTION ALARM
11
10
PANEL
LAMP
8L-9801
9
FLOOD
LAMP
107-1301
8
FLOOD
LAMP
107-1301
85
87a
87
30
7
382-PK
6
86
5
4
101-RD-12
3
2
1
139-4609
194-GN-10
THIS SCHEMATIC IS FOR THE 446B BACKHOE
C
KEY
R
105-BR-16
HEATER
B
C
536-WH-16
85
A
CAB
RELAY
3E-9362
START AID
SW
138-7008
M
536-WH-16
447-PK
126-PK-16
128-PK
200-BK-16
MAGNETIC
BEACON
128-6985
87a
87
122-BU-12
306-GN
608-GN-16
618-YL
617-BR
630-GY-16
620-WH-16
610-OR-16
C
B
A
603-PK
200-BK-16
610-OR
620-WH
606-GY
605-YL
640-GN
639-WH
122-BU-10
606-GY
603-PK
620-WH
610-OR
617-BR
608-GN
639-WH
630-GY
605-YL
200-BK-16
200-BK
200-BK
200-BK
605-YL
640-GN
639-WH
608-GN-16
618-YL
617-BR
620-WH-16
630-GY-16
126-PK-16
L987-WH
01
109-7457
01
20A
F874-PK
AIR COND - ATCH
15A
126-PK
161-PK-16
610-OR-16
FLOOD
LAMP
107-1301
10A
10A
10A
10A
10A
128-PK
113-OR
123-WH
121-YL
116-BR-12
118-GY
119-PK
FRONT FLOOD
BUCKETPOS/HORN
FRONT WIPER
REAR WIPER
REAR FLOOD
GAUGES
RUNNING LAMP
BREAKER
3T-2662
200-BK-16
15A
20A
1
10A
K
606-GY
101-RD-4
101-RD-4
603-PK
101-RD-10
NOTE D
B
C
B
A
1
2
2
-BU
-1
2
101-RD-10
306-GN
307-OR
2
1
522-WH
522-WH
513-OR
BUCKET
POSITIONER
SOLENOID
ARC SUPPRESSOR
326-PU
326-PU
M
PARK
BRAKE SW
105-8034
K
DATA
LINK
PLUG
101-RD-12
-
+
568-GN
A
382-PK
SHIFT CTRL
H
3E-8620
129-6466
CONN 1
CONN 2
CONN 3
CONN 4 CONN 5
CONN 11
CONN 6
CONN 7
CONN 8
CONN 9
CONN 12
CONN 10
CABLE AS
110-2706
CONNECTS TO
FRAME
101-RD-12
101-RD-12
101-RD-12
450-YL
443-YL
441-OR
326-PU
309-GY
406-PU
405-GY
752-YL
975-WH
754-BU
901-WH
755-OR
900-PU
751-GN
944-OR
975-WH
958-YL
751-GN
901-WH
755-OR
900-PU
754-BU
752-YL
C920-GY
281-BK
280-BK
279-BK
278-BK
277-BK
276-BK
202-BK
E999-GN
969-YL
UNUSED
SOLENOID RETURN
UNUSED
PARK BK ALARM
SPEED 4 SOLENOID
SPEED 3 SOLENOID
SPEED 2 SOLENOID
SPEED 1 SOLENOID
REV SOLENOID
FWD SOLENOID
ACTION LAMP
HARNESS CODE 5
1
2
3
21
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
HARNESS CODE 4
HARNESS CODE 3
HARNESS CODE 2
HARNESS CODE 0
UNUSED
UNUSED
UNUSED
UNUSED
966-GY
REV PAR (+B IN)
FWD PAR (+B IN)
SPEED 4 SW IN
SPEED 3 SW IN
SPEED 2 SW IN
970-GN
SPEED 1 SW IN
REV SW TO GND IN
FWD SW TO GND IN
UNUSED
UNUSED
22
23
24
25
8
7
26
27
28
29
L14
L28
L28
L28
L28
L29
30
L29
32
L29
L29
L45
DATA LINK -
DATA LINK +
945-BR
200-BK-16
200-BK
200-BK
UNUSED
200-BK-10
UNUSED SPEED IN
200-BK
UNUSED SPEED IN
UNUSED
307-OR
306-GN
126-PK-16
33
34
200-BK
417-GY
DE
L11
128-PK
483-BR
447-PK
126
-PK
C9
2
0
-GY
126-PK
1
4
35
36
37
38
126-PK-16
202-BK
321-BR
39
40
31
971-YL
972-BU
965-WH
968-BR
945-BR
944-OR
6
5
HARNESS CODE 1
PARK BK SW IN
GROUND
202-BK
202-BK
419-YL
202-BK
4
10
7
6
5
4
3
2
1
REAR WIPER
SW
7T-9303
B
H
L
P W
B
2
8
E
D
3
6
276-BK
277-BK
278-BK
279-BK
280-BK
281-BK
202-BK
E
C920-GY
10
L7
200-BK-10
L7
L7
L17
L38
L39
202-BK
9
8
7
6
5
4
3
2
1
+BATT (12V)
409-OR
321-BR
M
P
307-OR
306-GN
1
2
202-BK
521-YL
522-WH
200-BK-12
202-BK
5
720-PU
972-BU
971-YL
966-GY
970-GN
965-WH
968-BR
969-YL
E999-GN
7
119-PK
119-PK
419-YL
202-BK
552-WH
405-GY
406-PU
MOTOR
113-OR
143-BR
+BAT (12V)
6
UNUSED
321-BR
128-PK
322-GY
200-BK-10
200-BK
101-RD-10
101-RD-10
NEUTRAL
BACKUP ALARM
KEY SW
START RELAY
GROUND
NEUTRALIZER SW
L17
L25
L16
L12
L23
L22
L22
L19
L19
5
L19
L18
119-PK
K
K
L18 L18
101-RD-10
4
G
E
N
D
M
321-BR
E
E G
FIRST GEAR
SECOND GEAR
UNUSED
L40
L25
E
M
3
3
K
2
K
K
K
1
1
119-PK
K
K
720-PU
2
E
UNUSED
161-PK-16
UNUSED
FOURTH GEAR
128-PK
THIRD GEAR
322-GY
640-GN
639-WH
605-YL
606-GY
122-BU-10
419-YL
8
BK-14
BLOWER
MOTOR
3E-7501
REVERSE
415-GN
K
119-PK
200-BK
200-BK-16
200-BK-12
P
OPERATOR STATION
202-BK
128-PK
126-PK
L40
119-PK
FRONT
WIPER SW
7T-9303
E
OR-14
128-PK
L12
304-WH-10
2
1
322-GY
L28
200-BK
306-GN
307-OR
E
321-BR
E
E
TO PLATFORM
503-BR
118-GY
505-BU
504-YL
500-BR
501-GN
502-OR
BK
BK 128-PK
762-YL
118-GY
B
B
H
L
W
P
505-BU
504-YL
503-BR
OPERATOR STATION
118-GY
751-GN
900-PU
755-OR
901-WH
FORWARD
FORWARD PARITY
REVERSE PARITY
754-BU
975-WH
126-PK
D
326-PU
443-YL
441-OR
450-YL
309-GY
406-PU
405-GY
E
L45
L16
118-GY
752-YL
E
2
1
120-YL-12
CONN 14
CONN 15
CONN 16
CONN 17
PK
GN
MUR440
1
2
1
GND
B+
P
T
~
MOTOR
L
H
BR-16
GY-16
BK-16
OR-16
GN-16
5
3
6
2
4
L26
6
D
2
1
L L
L
L
L
L
L
L
B
B
5
4
1
2
3
L6
B
BK-16
GN-16
RD-16
WH-16
200-BK
502-OR
500-BR
639-WH
640-GN
604-OR-16
200-BK
605-YL
128-PK
322-GY
L6
118-GY
419-YL
113-OR
143-BR
606-GY
113-OR
405-GY
L
1 2
A
YL-16
E
A
L26
L31
L7
406-PU
419-YL
OR-16
143-BR
113-OR
405-GY
606-GY
BK-14
BK-14
605-YL
200-BK
L6
LEFT TURN
IND LAMP
8M-6176
620-WH
620-WH
200-BK
TURN/HAZARD SW
9X-9547
200-BK-16
610-OR
TURN
LAMP
3E-7500
610-OR
200-BK
605-YL
200-BK
606-GY
501-GN
113-OR
483-BR
ENGINE OIL
PRESS LAMP
8M-6176
RIGHT TURN
IND LAMP
8M-6176
COOLANT
TEMP LAMP
8M-6176
PARK BRAKE
LAMP
8M-6176
113-OR
113-OR
552-WH
9D-2868
9D-8047BASE
LENS
200-BK
FRONT DRIVE
LAMP
8M-6176
2
1
406-PU
128-PK
322-GY
FORWARD
HORN SW
3T-2357
ENGINE
SHUTDOWN
SOL
8C-3662
326-PU
200-BK-10
TO
ENGINE
BLOCK
FRONT WIPER
MOTOR GP
3E-7306
552-WH
301-BU-10
BRAKE FLUID
LAMP
8L-9801
DOME
LAMP
4M-3601
BK
WH
OPERATOR STATION
521-YL
521-YL
522-WH
513-OR
L
FRONT DRIVE
SW
3E-7270
START
GND
STOP
113-OR
L
552-WH
A
D
200-BK-10
D
D
2
1
16 GA
B
L14
L14
L3
L3
L3
D
L3
D
D
L2
D
200-BK
E
1
2
200-BK
BK-16
483-BR RD-16
G
D
EE
DD
TO
ENGINE
BK-6
CCCC
BK-00
TO
FRAME
2
PRIMARY STEER LAMP
8L-9801
1
417-GY
DD
BRAKE SW
9W-4139
200-BK
417-GY
BK 1
F
2
BK-6
D
ALT
3
RD
BU
PRIMARY
STEER SW
9X-3395
901-WH
D
2
G G
B
B
G
D
1
D+
R
B+
GND
BASE
LENS
BB
L2
AA
322-GY
200-BK
200-BK
620-WH
L2
L1
E
D
606-GY
200-BK-16
610-OR
620-WH
B
975-WH
754-BU
975-WH
754-BU
752-YL
975-WH
752-YL 751-GN
975-WH
751-GN
900-PU
900-PU
755-OR
975-WH
755-OR
901-WH
975-WH
NO. 2 SOL
(FORWARD)
3E-6268
BAT
MTR
762-YL
322-GY
200-BK
200-BK
610-OR
200-BK
200-BK
2
TO
ENGINE
1
2
9D-8047
2
1
NO. 3 SOL
(FOURTH GEAR)
3E-6268
NO. 4 SOL
(FIRST GEAR)
3E-6268
L7
1
TO
ENGINE
2
975-WH
D
D
2
1
RD-00
RD-00
BK-00
BK-00
16 GA
16 GA
BATTERY
3T-5760
BATTERY
3T-5760
NEG POS NEGPOS
D
CC
D
F
1
2
3
BK
NO. 5 SOL
(SECOND GEAR)
3E-6268
16 GA
16 GA
9D-2868
TURN
LAMP
3E-7500
1
2
1
X
101-RD-10
16 GA
16 GA
NO. 6 SOL
(THIRD GEAR)
3E-6268
D
B
G
1
2
ENGINE
OIL SW
7W-1238
D
D
101-RD-10
101-RD-10
BK
BB
309-GY
BK
BK
2
1
START AID
SOL
3T-9493
301-BU-10
MOTOR
D
D
450-YL
STARTER
304-WH-10
FORWARD
HORN
7T-0635
441-OR
S G
200-BK
X
405-GY
406-PU
405-GY
RD-00
326-PU
443-YL
BB
TO
FRAME
AA
NO. 1 SOL
(REVERSE)
3E-6268
CONVERTER
SENDER
4W-9972
200-BK-10 200-BK
113-OR
AA
D
16 GA
16 GA
16 GA
16 GA
ALTERNATOR
55A 3E-7295 STD
90A 9X-0341 ATCH
FRONT DRIVE
SOLENOID
6T-6885
552-WH RD-16
RD-16
301-BU-10
D
200-BK406-PU
COOLANT SW
COOLANT
SENDER
4W-9972
441-OR
~T
~T
443-YL
~T
200-BK
EE
16 GA
309-GY
450-YL
111-9860
9W-1519
415-GN
L14
568-GN
405-GY
406-PU
417-GY
483-BR
F
200-BK
417-GY
113-OR
447-PK
483-BR
8
1
12
11
10
2
C
3
4
5
6
7
9
P
604-OR
L27
L26
L26
604-OR
604-OR-16
L25
L39
N
N
N
N
L39
L39
522-WH
520-WH-12
552-WH
322-GY
143-BR
405-GY
113-OR
200-BK-12
502-OR
500-BR
118-GY
501-GN
200-BK
200-BK-12
L25
200-BK-12
605-YL
606-GY
405-GY
113-OR
605-YL
606-GY
406-PU
419-YL
128-PK
605-YL
606-GY
639-WH
640-GN
RESISTOR
7T-3828
515-GY-12
516-GN-12
406-PU
322-GY
200-BK
200-BK
N
113-OR
122-BU-10
515-GY-12
200-BK-12
517-BU-12
HEATER
BLOWER SW
6P-3236
122-BU-10
200-BK-12
417-GY
4F
L17
L16
3F
200-BK-12
202-BK
2F
1F
N
102-BU
1R
2R
3R
4R
12V
OUTPUTS
TO
GND
SOL
RET
P
B
U
P
S
T6
LE
P
102-BU
200-BK
200-BK
102-BU
54
P
321
SOLENOID
GEAR
P
E
L16
N
L
L
L16
L
417-GY
L38
419-YL
417-GY
200-BK
200-BK
128-PK
L16
161-PK-16
A
B
E
200-BK
200-BK
417-GY
419-YL
E
503-BR
505-BU
504-YL
119-PK
102-BU
OPERATOR STATION
E
E
F
F
P
9
FUEL
SENDER
6T-0454
447-PK
552-WH
143-BR
521-YL
11
10
P
102-BU-16
3
4
5
2
1
6
3
1
5
483-BR
DIODE BLOCK AS
112-4735
BLOWER
3E-7501
3
4
5
2
4
BLOWER SW
6P-3236
RESISTOR
7T-3828
515-GY-12
516-GN-12
517-BU-12
120-YL-12
520-WH-12
2
7
102-BU
1
200-BK
8
10A
515-GY-12
FUSE HOLDER
4K-5122
124-GN-12
MOTOR
E
BK-14
12
N
P
P
P
TO
PLATFORM
THERMOSTAT SW
3E-5465
10A FUSE 3K-8782
25A FUSE 128-0669
25A 124-GN-12
522-WH
200-BK-16
~T
CONN 13
116-BR-16
ATTACHMENT REAR FLOOD LAMP SW
REAR FLOOD
LAMP SW
3E-7268
116-BR-12
116-BR-16
630-GY-16
608-GN-16
6
4
3
1
5
2
L27
TO
PLATFORM
TO
PLATFORM
TO
PLATFORM
T
T
W/ATCH HARNESS AS. T CONNECT
HARNESS AS. B AND BEACON
9X-8079 AS SHOWN
603-PK
B
200-BK-16
603-PK-16
RD
BK
T
V
V
V
V
4
5
200-BK-16
Y
Y
BK-14
B
B
B
B
B
B
B
G
A
SEND
T
603-PK-16
SOCKET AS.
9R-7941
L27
L27
L31
L31
L38
L38
L37L44
L42 L42
L42
L43
L43
L43
L34
L34
L30
L30
H
H
H
H
H
H
H
H H
H
H
H
H
H
200-BK
441-OR
200-BK
200-BK
443-YL
200-BK
200-BK
200-BK
200-BK
441-OR
443-YL
447-PK
123-WH
123-WH
123-WH
123-WH
123-WH
123-WH
200-BK
200-BK
200-BK
200-BK
H
L41
L39
614-PU
119-PK
H
123-WH
B
L41
603-PK
608-GN-16
450-YL
B
H
L44
H
A
116-BR-16
116-BR-16
H
2
FRONT FLOOD
LAMP SW
3E-7270
NOTE E
2 1
620-WH-16157-YL
H
H
H
TO
PLATFORM
2
630-GY-16
608-GN-16
2 1
610-OR-16
L42
614-PU
COOLANT
TEMP GAUGE
3E-8535
SERVICE
METER
6T-7337
450-YL
200-BK
116-BR-12
614-PU
614-PU
123-WH
157-YL
614-PU
START
AID SW
3E-7272
614-PU
614-PU
200-BK
TO RADIO
119-PK
S
CONNECT HARNESS AS. S TO HARNESS
AS. B AND BEACON 9R-8250 AS SHOWN
603-PK-16
603-PK
603-PK-16
200-BK
B
S
S
200-BK
200-BK
200-BK
200-BK
200-BK
A
B
608-GN
A
OR-16
BR-16
614-PU
614-PU
630-GY
630-GY-16
447-PK
603-PK
123-WH
H
MOTOR
TO
PLATFORM
123-WH
STOP/
TAIL
LAMP
3E-7398
T
S
200-BK
200-BK
200-BK-16
200-BK
B
605-YL
610-OR
620-WH
639-WH
200-BK
617-BR
617-BR
639-WH
200-BK-16
610-OR
FAN AS.
5D-2855
119-PK
RD
OR-14
RD-14
308-YL-16
116-BR-12
GY-16
GN-16
605-YL
620-WH
608-GN
200-BK
1
1
200-BK-16
S
S
H
200-BK
OPERATOR STATION
OPERATOR STATION
REAR WIPER
MOTOR GP
3E-7304
C
B
BK-16
L
H
MOTOR
A
450-YL
A
610-OR-16
2
200-BK
1
603-PK
200-BK-16
200-BK
630-GY
BK
614-PU
102-BU-16
H
H
H
H
H
H
H
200-BK
614-PU
H
200-BK
H
H
H
CONV
TEMP
GAUGE
3E-8534
200-BK
H
200-BK
H
FUSE
HOLDER
9W-2035
NOTE C
- +
447-PK
- +
SIG
IGN
SEND
GRD
IGN
SEND
GRD
IGN
SEND
GRD
IGN
GRD
LAMP
8M-6176
REAR FLOOD
LAMP SW
3E-7270
NOTE E
BEACON SW
3E-7270
LAMP
8M-6176
LAMP
8M-6176
443-YL
LAMP
8M-6176
618-YL
200-BK
RIGHT TAIL LAMP
LEFT TAIL LAMP
119-PK
441-OR
LAMP
8M-6176
H
10A
10A
504-YL
505-BU
503-BR
119-PK
119-PK
603-PK-16
603-PK
123-WH
121-YL
200-BK
614-PU
L
102-BU-16
102-BU-16
6
620-WH-16
NOTE E
3
503-BR
RUNNING
LAMP SW
3E-7268
505-BU
504-YL
L30
L30
5
3
6
4
H
FUEL GAUGE
3E-8532
2
1
200-BK
450-YL
5
4
L43
K
C-9
D-9
E-4
WITH ATTACH BEACON REPLACE 10A FUSE WITH
15A FUSE
FUSES 10A-9W-1442 15A-9W-1441 20A-9W-1446
25A-1Q-1905
NORMALLY CLOSED WHEN BRAKE IS DEPRESSED
NORMALLY CLOSED AT PROPER REFRIGERANT CHARGE
A-2
A-3
A-3
A-2
A-2
B-1
C-3
C-3
01
01
00
01
01
00
V
T
S
4D-6565
F-1
ATCHE-701
F-9
B-6
A-6
E-4
B-7
P
NOTE
LOC
01
00
02
9R-7939
7T-3550
106-1689
9R-8619
8R-6892EE
DD
L 01
02
01
03
K
H
G
E
D
9R-6859
B
1V-1151
01
9R-7958
BB
L# CIRCUIT GROUPING
DESIGNATION
9R-8722
Y
9R-6501
X
N
M
9R-9607
9R-6500
A
7P-6682
AA
01
CC
NOTE D:
NOTE B:
CABLE AS.
WIRE AS.
HARNESS AS.
LOCPART NO.IDENT
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
NOTE A:
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF,
AND XMSN SHIFTER IN NEUTRAL
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 18 GAUGE
9R-9554
3E-9093
116-4236
9R-9606
NOTE
NOTE C:
CHG
B-7
A-4
B-4
B-4
C
F
A-8
B-7
E-7 NOTE E: WHEN ATACHMENT FRONT & REAR FLOOD LAMPS,
9X-6853, ARE INSTALLED ADD ATACHMENT FRONT
FLOOD LAMP SWITCH, 3E-7270. ALSO REMOVE
STANDARD REAR FLOOD LAMP SWITCH, 3E-7270,
AND REPLACE WITH 3E-7268 SWITCH.
TO MACHINE STRUCTURE
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.
MONITOR CIRCUIT.
PANEL LAMP CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
TURN SIGNAL CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
START AID CIRCUIT/AIR INLET HEATER.
TRANSMISSION CONTROL CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.
R
1
2
2
-BU
-1
2
101
-RD-12
WH/RD-14
9
GG
J
161-6360 00
D-5
R
C594-YL-12
122-BU-12
C594-YL-12
85
MOTOR
2 1
SEAT SW
AIR SEAT
SEAT COMPRESSOR
