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.
KENR2857
December 1995
CB-434C Vibratory Compactor
Electrical System
4DN1-UP
©
1995 Caterpillar
All Rights Reserved
Printed in U.S.A.
11
13
21
19
33
4
5
3
34
2
1
6
7
28
26
30
40
181-GY
751-GN
1
200-BK
2 3456789101112
8765432
C932-YL
C934-BU
29
406-PU
27
23
8
15
14
17
36
35
32
1
2
C926-BU
C924-YL
C925-GN
BRAKE
SWITCH
B
A
P19
R19
1 2
P23R23
VIB
CONTROL
VIB
CONTROL
P22
1
2
RH LIGHT GP
R37 P37
606-GY
614-PU
606-GY
200-BK 200-BK
614-PU
605-YL
614-PU
614-PU
605-YL
B439-RD
P35 R35
P36R36
P38
P39
P40
P41
R38R39R40R41
SHIELD
200-BK
C729-BU
C730-BR
C928-GY
C924-YL
C929-WH
614-PU
P28
R16
C929-WH
C928-GY
200-BK
200-BK
CIRCUIT GROUPING
DESIGNATION
AT CH WIRE, CABLE,
COMPONENT
CONNECTOR
INTERNAL ELECTRICAL
CONNECTIONTO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLADE, SPADE, RING
OR SCREW TERMINAL
DESCRIPTIONSYMBOL
RED
WHITE
ORANGE
YELLOW
PINK
BLACK
GRAY
PURPLE
BROWN
GREEN
BLUE
COLOR
RD
WH
OR
YL
PK
BK
GY
PU
BR
GN
BU
200-BK
200-BK
C729-B
U
C730-BR
LH LIGHT GP
111-YL
110-GN
114-GN
200-BK
449-BU
176-YL
450-YL
1
2
3
4
5
6
RECORDER
D
C B
A
4512
3
1
2
3
4
5
6
7
88
7
6
5
4
3
2
11
2
3
4
5
200-BK
449-BU
110-GN
63-WH
6
8
5E7912
200-BK
606-GY
FRONT
LIGHT GP
AMPLIFIER
FRONT
LIGHT GP
ROADING LIGHT HARNESS
200-BK
450-YL
110-GN
63-WH
REGULATOR
814135
200-BK
200-BK
200-BK
814433
5E7912
AMPLIFIER
114-GN
10A
7
88
7
6
5
4
3
2
1
2
2
2
7
R8
6
DRUM OFFSET/
JOINT CUTTER
HARNESS
111
DRUM
OFFSET
VALV E
JOINT
CUTTER
VALV E
2
1
ABBREV
200-BK
4
31
400-GN
5
321
20
C925-GN
777-PU
200-BK
C923-OR
377-OR
C927-PU
608-GN
321-BR
B440-RD
449-RD
276-BK
326-PU
123-WH
---++ +
SIGSIGSIG
400-GN
A919-BU
A920-BR
A983-BU
309-GY
306-GN
C925-GN
C924-YL
C926-BU
777-PU
R3
C922-BR
405-GY
C927-PU
C926-BU
8
428-OR
C931-OR
109-OR-6
BK-00
MOTOR
2
1
P31
S
MTRBAT
MOTOR
CABLE AS.
RD-00
CABLE AS.
P21
POS NEG POS NEG
T
STARTER
MOTOR
HYD
TEMP SW
DISCONNECT SW
XX
465-OR
GROUND
SPEED
TA CH
VIB
TA CH
FUEL
GAUGE
HOUR
METER
FUEL
SENDER
400-GN
+
-
A
1
2
400-GN
200-BK
608-GN
BC
ENGINE OIL
PRESS.SW
307-OR
10 10
10
15
10
1010
10
123-WH
10
10
200-BK
112-PU-6
200-BK
109-OR
BACKUP
ALARM
FUSE
109-OR-6
KEY
START
FUSE
R9
308-YL
121-YL
109-OR
ST
ON
OFF
R
C
S
B
308-YL
IGNITION
SWITCH
GAUGES/
SPEED SENSOR
FUSE
BRAKE
FUSE
155-PK
103-YL
VIBRATION
FUSE
FLASHER
FUSE
173-YL
175-PK
322-GY
123-WH
103-YL
110-GN-14
1
2
3
4
176-YL
RECORDING
MODULE
FUSE
321-BR 321-BR321-BR
608-GN 608-GN
DRUM
OFFSET
FUSE
400-GN
173-YL
200-BK
C923-OR
200-BK
REAR
WATER PUMP
WATER
SPRAY
FUSE
200-BK
110-GN-14
112-PU-6
155-PK
176-YL
304-WH-6
306-GN
200-BK
101-RD-6
121-YL
STARTER
RELAY
ALT
BREAKER
7
STARTING AID
FUSE
WORKING LAMP GP
18-BK
18-WH
6543
C922-BR
HOUR METER
PRESS.SW
1
MOTOR
200-BK
FRONT
WATER PUMP
322-GY
TO
ENGINE
BLOCK
200-BK-12
WORKING LAMP GP
WARNING HORN
BACKUP ALARM
REAR
VIB SENSOR
BATTERYBATTERY
TO
ENGINE
BLOCK
TO
FRAME
200-BK-12
BK-00
BK-00
CABLE AS.
CABLE AS.
STARTING
AID
1
2
16
38
R29
P29
R12 P12
R13 P13
REAR
HARNESS
FRONT
VIB SENSOR
FRONT HARNESS
R15
GND
FRAME
P16
WORKING LAMP GP
WORKING LAMP GP
P15
ALTERNATOR
ALT
+
R
200-BK
R21
12
JUMP STUD
STRAP AS
BK-00
CABLE AS
R31
200-BK
200-BK
200-BK
200-BK
C922-BR
200-BK
B439-RD
B439-WH
1
2
200-BK
ENGINE HARNESS
309-GY
200-BK
635-BRF
E
D
C
B
A
C930-BR
C932-YL
200-BK
B438-OR
614-PU
FUNCTIONAL
LIGHT
CLUSTER
635-BR
614-PU
B438-OR
18-BK
C930-BR
C932-YL
220-BK
221-BK
ENGINE COOLANT
TEMP SW
T
465-OR
326-PU
200-BK
FUEL
SHUT-OFF
SOLENOID
P17
R17
105-BR
376-GN
B440-RD
449-RD
447-PK
307-OR
309-GY
308-YL
376-GN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
308-YL
307-OR
447-PK
309-GY
449-WH
376-GN
B440-WH
C932-YL
C930-BR
B438-OR
614-PU
635-BR
A982-BR
181-GY
105-BR
200-BK
105-BR
465-OR
123-WH
200-BK
200-BK
112-PU-6
P4
109-OR-6
308-YL
608-GN
619-GN
614-PU
173-YL
635-BR
606-GY
605-YL
109-OR-6
THROTTLE
CONTROL
RELAY
221-BK
123-WH
449-RD
P14
R14
C922-BR
B439-WH
619-GN
605-YL
606-GY
619-GN
18-WH
R18
614-PU
P18
654321
322-GY
P8
751-GN
37
C923-OR
221-BK
220-BK
A983-BU
606-GY
619-GN
614-PU
200-BK
CABLE AS
.
RD-00
CABLE AS
.
RD-00
449-WH
109-OR-6
109-OR-6
A920-BR
619-GN
619-GN
619-GN
322-GY
B440-RDB440-WH
605-YL
200-BK
GND
FRAME
5Y
-1423
108-1032
9S-0174
4
6
3
1
5
2
B440-GN
C925-GN
B921-WH
AUTO/MAN.
SWITCH
C924-YL
307-OR
B439-RD
103-YL
306-GN
155-PK
C932-YL
B440-RD
9W-3043
DRUM
SELECT
SWITCH
2
326-PU
308-YL
FUEL
SOLENOID
RESISTOR
308-YL
108-1224
326-PU
123-WH
B920-GN
1
C923-OR
C927-PU
106-0800
3E-0075
C926-BU
3
3
12
LOW/HIGH
AMP.
SWITCH
3T-5760
3T-5760
9S-4611
C933-GN
608-GN
200-BK
1
52
4
3
87
87a
30
NEUTRAL
START
RELAY #1
NEUT START
155-PK
VIB ON/OFF
330-YL
103-YL
C932-YL
PA RT OF VALVE GP
AUTO-VIB
SWITCH
(REV)
AUTO-VIB
SWITCH
(FWD)
C925-GN
C934-BU
C924-YL
A919-BU
9V-6943
5Y-1423
7N-0718
1G-9759
103-4977
108-3190
9X-4381
3T-1815
200-BK-12
9X-4381
9X-4381
7T-0969
9X-4381
3E-7382
6T-3670
114-4303
2N-2317
2N7807
105-3542
105-3542
7T-0969
105-3542
2
226-BK
447-PK
117-5674
9G-7641
604-OR
117-5673
4W-2141
6T-7337
087-0541
086-8953
087-0548
605-YL
200-BK
614-PU
3E-5239
606-GY
3E-5239
3E-5239
3T-2357
7R-3695
5L-2854
4D-1836
400-GN
123-WH
200-BK
4D-1836
1V-6653
3E-5239
777-PU
777-PU
330-YL
330-YL
777-PU
B765-BR
200-BK
7 8 6 1 4 2 3 5 9 10 11 12
419-YL
200-BK
NEUTRAL
START
RELAY #2
777-PU
BRAKE
RELAY #1
BRAKE
RELAY #2
1
52
4
3
BRAKE
SWITCH
87
87a
5E-8006
3E-5239
3K-1650
8V-2514
1V-6652
101-7740
3E-5239
3E-5239
3E-5239
3E-5239
24
RD
3E-5239
3E-5239
BK
BL
SHIELD
SHIELD
200-BK
200-BK
30
R10
200-BK
109-OR
C
200-BK
200-BK
200-BK
200-BK
123-WH
200-BK
B
30
87a
87
200-BK
181-GY
A982-BR
1
200-BK
A953-PK
110-GN-14
176-YL
175-PK
A
R25 P25
751-GN
B920-GN
C BLK
BWHT
A RED
+AUX
+HOT
-GND
173-YL
B921-WH
103-YL
C933-GN
C933-GN
B921-W
H
C924-YL
B920-GN
C933-GN
C925-GN
C934-BU
C932-YL
330-YL
155-PK
121-YL
C925-GN
C934-BU
C924-YL
C933-GN
C932-YL
103-YL
330-YL
155-PK
103-YL
WARNING
HORN
SWITCH
BACKUP
ALARM
PRESS SW
3E-5239
C
A
B
400-GN
3
P10
R27
614-PU
R32P32
7W-1251
605-YL
NOT USED
C
A
B
608-GN
604-OR 604-OR
604-OR604-OR
HAZARD
200-BK
200-BK
112-PU-6
P10
1
2
3
7 8 6 1 4 2 3 5 9 10 11 12
TIMER
7 8 6 1 4 2 3 5 9 10 11 12
R
H
T- D
GROUND
HEAD LAMP
TURN
P30
B
C2
114-GN-12
31
30B
49A
C
49
321-BR
322-GY
155-PK
B439-RD
B440-RD
308-YL
121-YL
C932-YL
C924-YL
103-YL
C926-BU
326-PU
777-PU
C927-PU
307-OR
C925-GN
306-GN
110-GN
R30
C935-PU
NOT USED
-
+
BK
447-PK
226-BK
326-PU
614-PU
326-PU
C922-BR
R10
P27
B438-OR
4
C
1
THROTTLE
CONTROL
SWITCH
155-PK
330-YL
103-YL
C932-YL
5
322-GY
465-OR
3
MAIN
RELAY
3
4
4
2
3
1
1
2
2
4
387a
8730
C934-BU
321-BR
A
2
1
3
4
606-GY
605-YL
619-GN
221-BK
FRONT SPEED
SENSOR
604-OR
537-GN
20
UNUSED (BRAKE LIGHT)
FLASHER
+BATTERY
SHIELD
604-OR
121-YL
C720-BU
220-BK
200-BK
18
12
30
87a
87
C937-WH
3
321-BR
4
25
C923-OR
1
INT
RELAY
39
TURN
SWITCH
2
3
1
10
22
2
25
4
9
1
5
WATER
SPRAY
SWITCH
2
1
DIAGNOSTIC
LIGHT
CLUSTER
C931-OR
1
200-BK
428-OR
200-BK
405-GY
24
614-PU
123-WH
123-WH
123-WH
614-PU
447-PK
B440-WH
37
38
16
20
31
32
35
36
17
14
15
8
23
27
29
40
30
26
28
7
6
1
2
34
3
A982-BR
322-GY
FRONT/REAR
SPRAY
SWITCH
5
9
25
4
R4
326-PU
THROTTLE
CONTROL
BREAKER
P24
CBA
87654
4
22
10
39
3
3
87
87a
2
30
6
THROTTLE
CONTROL
SWITCH
406-PU
123-WH
C931-OR
428-OR
405-GYF
E
322-GY
C730-BR
C929-WH
200-BK
RD
15
D
C
B
606-GY
2
173-YL
619-GN
614-PU
608-GN
605-YL
5
308-YL
635-BR
155-PK
C729-BU
C928-GY
181-GY
A983-BU
C729-B
U
C730-BR
C928-GY
C929-WH
175-PK
5
A
A920-BR
FUNCTIONAL
LIGHT
RELAY
HYD
TEMP
RELAY
WARNING
LIGHT
RELAY
221-BK
406-PU
A982-BR
200-BK
COOLANT
TEMP
RELAY
ENGINE OIL
PRESS.
RELAY
465-OR
220-BK
276-BK
87a
87
3
4
2
5
1
30
STARTING
AID
RESISTOR
30
1
5
2
4
3
87
87a
87
3
4
2
5
1
30
30
1
5
2
4
3
87
87a
87a
87
3
4
405-GY
C931-OR
428-OR
2
200-BK
226-BK
C938-BR
377-OR
376-GN
5
1
30
123-WH
LIGHT
BREAKER
LIGHT
SWITCH
110-GN
C922-BR
B438-OR
C923-OR
C930-BR
HYD CHARGE
OIL PRESS.
RELAY
C938-BR
C930-BR
30
1
5
2
4
3
87
87a
2
87a
112-PU-6
A919-BU
112-PU-6
109-OR-6
A919-BU
A982-BR
200-BK
A920-BR
123-WH
33
19
A983-BU
181-GY
2
C926-BU
C927-PU
WARNING
HORN
C922-BR
777-PU
C924-YL
C925-GN
220-BK
306-GN
309-GY
200-BK
RD
A983-BU
WH
P2
BK
A920-BR
A919-BU
400-GN
1
105-BR
112-PU-6
21
405-GY
406-PU
1
221-BK
1
R11
P11
R3
109-OR
1
C938-BR
123-WH
428-OR
604-OR
HYD OIL
PRESS. SW
WH
326-PU
400-GN
148-WH
12
465-OR
DIODE AS.
P26
568-GN
P7P6
12
112-PU-6
112-PU-6
2
400-GN
DIODE AS. DIODE AS.
R1
200-BK
121-YL
200-BK
B439-RD
34
C930-BR
123-WH
449-RD
5
C936-GY
B440-RD
321-BR
608-GN
377-OR
C923-OR
123-WH
200-BK
376-GN
377-OR
C938-BR
P3
428-OR
226-BK
604-OR
THROTTLE
CONTROL
SOLENOID
200-BK
405-GY
200-BK
751-GN
406-PU
P9
INDICATOR
LAMP
11
428-OR
C931-OR
405-GY
276-BK
220-BK
465-OR
STARTING
AID
SWITCH
C938-BR
10
276-BK
400-GN
R2P1
155-PK
11
10
406-PU
221-BK
200-BK
1
2
175-PK
406-PU
B440-RD
C928-GY
C929-WH
C729-BU
C730-BR
175-PK
155-PK
P44
13
11
176-YL
123-WH
449-RD
200-BK
105-BR
6
VIB SELECTORVALVE
5
4
3
2
1
C927-PU
R22
200-BK
200-BK
12
200-BK
9
SHIELD
18
UNUSED
6
R44
7
P5
8
1
9 10
23456
1
B
11 12
9
604-OR
R24
3
Electrical Schematic
123-8615
1
2
5
2
3
2
4
d45009
3
3
22
2
22
3
2
2
2
3
6
7
12
13
12
16
21
19
20
20
23
8
11
9
8
10
15
18
14
17
24
29
30
31
28
27
26
25
NOT
USED
NOT
USED
3 5
1 4
7 6
8
2
11
14
15
18
16
19
2021
22
23
24
25
26
27
28
29
30
31
917
13 12
10
d46573
1
Item
Component
2
3
4
5
6
7
8
No.
Control Console Support
Instrument Panel
Control Console
Warning System Diodes
Rear Vibratory Sensor
Coolant Temperature Switch
Service Meter And Oil Pressure Switches
Governor Speed Control Solenoid
Starter And Solenoid
Hydraulic Temperature Switch
Air Intake Heater
Governor Speed Control Circuit Breaker
Fuel Shutoff Solenoid
Disconnect Switch
Battery
Starter Relay
Alternator Circuit Breaker
Vibratory Control Solenoids
Front/Rear Drum Vibratory Control Solenoids
9
10
Front Lamp Group
Warning Horn
11
12
13
14
15
19
20
21
18
16
17
22
23
24
25
26
27
28
29
30
31
Rear Lamp Group
Backup Alarm
Front Vibratory Sensor
Fuel Level Sender
Rear Water Spray Motor
Front Water Spray Motor
Hydraulic Oil Pressure Switch
Vibratory Control Switch
d46569
Front Speed Sensor
Brake Solenoids