SENR6240 June 1994
HARNESS CONNECTOR LOCATION CHART Connector
Machine Location
40 Contacts
CONN1 *
RR - 105-9998 Controller
A-10
24Contacts
CONN2 *
RR - 105-9998 Controller
B-10
CONN9 1 E
A - 106-0025 RR - 105-9998
D-4
CONN10 2 E
A - 106-0025 RR - 105-9998
D-4
CONN11 3 E
A - 106-0025 RR - 105-9998
CONN8 4 E
A - 106-0025 RR - 105-9998
4
CONN13 4 A
2
1
10 Contacts
4
3
3
AREA A
9 Contacts
2
7 Contacts
A - 106-0025 J - 7Y-3921
E-9
RR - 105-9998 C - 105-9930
D-13
CONN6 4 D
RR - 105-9998 M - 111-4720
B-3
CONN5 3 D
RR - 105-9998 M - 111-4720
B-4
CONN4 2 D
RR - 105-9998 M - 111-4720
B-4
CONN43 6
RR - 105-9998 D - 7Y-8127
C-13
CONN67 5
T - 7Y-81 39 Tuner
E-11
CONN14 3 A
A - 105-0025 E - 111 -471 2
3 7
6
1
9 10
8
4
5
8 3
9
4
1 2
4 Contacts
CONN19 2 B
45
T - 7Y-8139 Speaker
D-11
UU - 7Y-8139 Speaker
D-11
CONN29 A - 106-00250 18 Aux Hydraulic Press Switch CONN23
B-5
A - 105-0025 Heater Unit A - 105-0025 J - 7Y-3921
2 Contacts
CONN53 1 F
F-10
CONN38
E-9
CONN58 5 D
RR - 105-9998 RR - 105-9998
A-10
CONN55 3 F
RR - 105-9998 Travel Speed Solenoid
A -12
CONN54 2 F
RR - 105-9998 Trenching Solenoid
A-12
CONN63
RR - 105-9998 V - 51-8284
C-6
20
RR - 105-9998 Boom Raise Press Switch
F-2
RR - 105-9998 Level Solenoid RR - 105-99980 P - 7Y-3988
A - 106-0025 RR - 105-9998
D-3
CONN82
A - 106-0025 Travel Press Switch (Left)
F-2
W - 105-9934 Refueling Pump
F-14
W - 105-9934 Refueling Pump Switch
E-14
V - 51-8284 Fine Swing Solenoid
C-6
A - 106-0025 Seat With Seat Heater
F-10
CONN62 30
F-13
C - 105-9930
F-15
CONN72 6 F
RR - 105-9998 X - 51-8345
A-12
CONN73
X - 51-8345 Creeper Speed Control Solenoid
A-15
X - 51-8345 Creeper Speed Control Solenoid
A-15
A - 106-0025 PP - 106-0027
F-8
C - 105-9930 Start Aid Solenoid
F-14
C - 105-9930 Action Alarm
E-14
C - 105-9930 W - 105-9934 D - 7Y-8127
E-14
CONN80 9 C
E-15
CONN81 SS - 106-0026 10 C Radio Control Switch
F-8
D - 7Y-8127 Speed Sensor
C-15
CONN75 5 C
L - 102-7902 Seat Heater Switch
F-7
E - 111-4712 Alarm Fault
E-2
CONN76 1 C 6
L - 102-7902 Creeper Speed Control Switch
F-7
F - 51-8216 N - 7Y-8245
E-1
CONN77 1C 8
LL - 51-8375 Fine Swing Control Switch
F-7
CONN35 32 1
F - 5l-8216 N - 7Y-8245
F-1
CONN78 38 1
LL - 5l-8375 MM - 51-8374
F-9
CONN26 1 B 4
H - 5l-8215 Start Aid Switch
E-5
CONN61 1B 6
H - 5l-8215 Fine Swing Control Switch
E-5
CONN22 1 B 7
J - 7V-3921 Lower Washer Switch
E-7
CONN61 1B 5
H - 5l-8215 Low Idle Switch
E-5
CONN20 1 B 9
J - 7Y-3921 Hammer Control Switch
E-7
CONN60 1C 3
K - 7Y-3868 Horn Switch
F-5
CONN42 CONN31 2 A
CONN68 27 1
A/C Compressor Clutch Sol
S - 7Y-5508 Hammer Control Sol U - 7Y-8105 Converter
*=Connector is located at the component.
D-5 E-12
2 Contacts
Bullet Terminal
1 Contacts
CONN74 42
CONN70 36 1
D F
330 & 330L Excavators Electrical System 46 28 44 5
RR - 105-9998 D - 7Y-8127
3 4
8
5
1
2
3
4
1
6
5
43 7
42
39
16 46
37
46 31 20
16
41
24
42
25
21 19
17
12 36
29 28
F 3
6 35 3 13
33
36
34
15
AREA F
AREA E
330L: 9ML1-UP 5YM1-UP
9
1 23 9 30
12
C
3
44 26
20 D
8
22
B 5
45 E 22 13 3 19 33 29 10 11 39 40 14 38 18 10 47 43 46
37
2
2
A
1 1
3
3
Machine Harness Connector And Component Locations AREA G AREA H Printed in U.S.A.
© 1994 Caterpillar All Rights Reserved
Harness And Wire Electrical Schematic Symbols
Electrical Schematic Symbols And Definitions A
AA
Component
Schematic Location
T Schematic Location
Machine Location
Sensor - Speed
C-15
19
Solenoid - Air Conditioner Compress Clutch
E-15
20
Machine Location
Component
C-10
1
Alarm - Action
E-2
3A
Alarm - Travel
E-14
2
Solenoid - Creeper Speed Control
B-15
46
Alternator
D-14
3
Solenoid - Engine Stop
B-14
21
Antenna
E-11,12
4
Solenoid - Fine Swing
C-6
22
Battery
A-2
5
Solenoid - Hammer Control
D-5
23
Block - Terminal
B-4
1D
Solenoid - Level
B-12
1F
Breaker
A-9
5D
Solenoid - Start Aid
F-14
25
Controller
B-10
6
Solenoid - Travel Speed
A-12
3F
Converter
E-12
7
Solenoid - Trenching
A-12
2F
Actuator - Governor
3B
Speaker
D-11
28
Fuse - Block
B-6, 7, 9
E-5
7D
Switch - Aux Hydraulic Press
E-2
29
Horn
C-2, D-2
8
Switch - Boom Raise Press
D-12
3G
Lamp - Boom
C-1, D-1
9
Switch - Creeper Speed Control
F-7
6C
Lamp - Cab
E-1, F-1
43
Switch - Disconnect
A-3
6D
C-2
10
Switch - Engine Oil Press
C-15
31
E-11
42
Switch - Fine Swing Control
F-7
4C
Lighter - Cigar
E-3
1A
Switch - Governor Backup
E-9
78
Meter - Service
E-2
2A
Switch - Hammer Control
E-7
10B
Monitor
E-2
4A
Switch - Horn
F-5
3C
Motor - Lower Wiper
E-2
11
Switch - Implement Swing Press
D-12
1G
Motor - Starter
A-14
12
Switch - Low Idle
E-5
2B
Motor - Washer
F-13
13
Switch - Lower Washer
E-7
8B
Motor - Wiper
F-2
14
Switch - Lower Wiper
E-7
9B
Pump - Refueling
F-15
15
Switch - Neutral Start
F-3
33
Relay - Boom Lamp
B-7
8D
Switch - Pump Backup
F-8
2C
Relay - Chassis/Cab Lamp
B-9
8D
Switch - Radio Control
F-7
7C
Relay - Fine Swing
A-9
8D
Switch - Refrigerant Low Press
F-15
34
Relay - Horn
B-6
8D
Switch - Refueling
E-13
35
Relay - Main
C-9
4D
Switch - Refueling Pump
E-15
36
Relay - Main
B-8
9D
Switch - Seat Heater
F-7
5C
Relay - Refueling Pump
A-6
8D
Switch - Speed Change
E-8
68
Relay - Starter
B-7
3D
Switch - Starter
E-6
1B
Relay - Washer
B-7
8D
Switch - Start Aid
E-5
4B
Relay - Wiper
B-9
8D
Switch - Start Aid Coolant Temperature
D-15
37
Resistor - Backup
F-9
1C
Switch - Travel Press
F-2
47
Seat With Seat Heater
F-10
45
Tuner
E-11
39
Sensor - Engine Coolant Temperature
D-15
16
Unit - Air Conditioner
F-10
40
Sensor - Fuel Level
F-13
17
Unit - Heater
F-10
44
Sensor - Hydraulic Oil Temperature
B-11
5F
Valve - Proportional Reducing
A-12
4F
Pressure Symbol
Temperature Symbol
Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
Receptacle
Plug
Level Symbol
Flow Symbol
1 2
1 2
1
Component Location
C-13
5
14
G
H
6
27
40
Lamp - Dome
7
4
330: 8RL1-UP 2ZM1-UP
32
35
Lamp - Chassis
9
31
7
17
45
Dial - Engine Speed
AREA C
4
1
CONN71 4 C
41
1
5
D-15
C - 105-9930 Fuel Level Sensor Refrigerant Low Press SW
9
46 46 41 42
34 25
CONN83 6 E
29
4
10
D-2
F-2
CONN64
3
E 9
36
23
RR - 105-9998 Travel Press Switch (Right)
28
6
8
12
B-12
CONN51
CONN65
43
3
20
22
G
11
D - 7Y-81 27 Start Aid Coolant Temp Switch
43
30
6
D-12
CONN47 2 H
46
2 2
E-2
CONN59 3 G
A - 105-0025 Lower Wiper Motor
26
7
E-6
D-5
CONN33 10
CONN37
1
CONN25B H - 51-8215 40 MM - 5l-8374
CONN84
11
9
E-12
A - 106-0025 S - 7Y-5508
E-5
31
9
U - 7Y-81 05 Converter
E-6
44
1
5
6
CONN25A A - 106-0025 39 MM - 5l-8374
CONN79
1
4
19
CONN7 5 E
H - 51-821 5 Engine Speed Dial
CONN36
4
E-7
E-10
CONN27 3 B
25
1
J - 7Y-3921 Lower Wiper Switch
2
31
25
F-6
C-11
24
8
17
C-15
3
23
21
31
D - 7Y-81 27 Engine Oil Press Switch
1
7
8
H
D-15
A - 106-0025 K - 7Y-3868
RR - 105-9998 Governor Actuator
CONN40
6
CONN69
35
34
16
19
CONN44 9
35
3
CONN21 8 B
D - 7Y-8127 Engine Coolant Temp Sensor
2
24
C
44 19 46 47 40 33 40 45 18 5 42 13 3 14 38 29 47 10 28 7 39 43 11 17 27 B 46 A 4 45
35 37 3
12 32 43 14
13
39
17
16
44
46
20
D-12
CONN66
5
16
E-6
RR - 105-9998 Implement Swing Press Switch
34
10
CONN41
A - 106-0025 H - 51-8215
CONN52 1 G
CONN45
6
CONN46 3 H
F-4
F-11
33
5
14
13 36 15 29 28
25 33
37
A - 106-0025 C - 105-9930
A - 105-0025 Air Conditioner Unit
CONN48
4
13
CONN25
23 34
CONN15 7 C
23
7
E-12
A-12
CONN39
2
F - 51-8216 U - 7Y-81 05
RR - 105-9998 Proportional Reducing Valve
37
3
F-2
CONN56 4 F
CONN49
2 Contacts
G - 51-8217 Wiper Motor
E-1
22
AREA B
D-10
F - 51-821 6 G - 51-821 7
6
5 Contacts
F - 51-8216 T - 7Y-8139
11
CONN34 7
CONN15 7 C
7
RR - 105-9998 M - 111 -4720
CONN12
CONN28
F-9
CONN50 1 H
E-2
11
3 Contacts
Location
E - 111-4712 Monitor
CONN12
E-10
Harness And/Or Components
CONN30 1 A
12
D-5
CONN18 1 B
Machine Location
CONN32
D-4
E-6
A - 106-0025 L - 102-7902
Connector
4 Contacts
A - 106-0025 H - 5l-8215
CONN3 1 D 6 Contacts
A - 106-0025 F - 51-8216
Schematic Location
CONN24 3
CONN17 1 C
2
Harness And/Or Components
2
Typical representation of a Sure-Seal connector. The plugand receptacle contain both pins and sockets.
Pin or Socket Number Wire, Cable, or Harness Assembly Identification
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Component Part Number
Single Wire Connector
Normally open switch that is closed due to an applied condition, and will open again with a specific decrease in that condition.
C
A
A 325-PK-14
Pin
AA 1
9X-1123 325-PK-14
Wire Color
Socket
Normally closed switch that will open with an increase of a specific condition. 2
Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition.
200-BK-14
Circuit Number Identification
Wire Gauge
Electrical Schematic Symbols And Definitions
The circle indicates that the component has screw terminals and a wire can be disconnected from it.
FUSE - A component in an electrical circuit that will open the circuit if too much current flows through 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.
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.
T
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.
AREA D
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.