TM-9-2350-311-20-1
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS
AUGUST 1994
TM-9-2350-311-20-1 - Page 768 of 1275
Connector
Wire
No.
Electrical Lead To:
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Aeration detector
352B
Aeration detector
352A
Master switch
459B
Engine oil pressure gage
36
Engine water temperature gage
33A
Transmission oil temperature gage
324
Transmission oil pressure gage
321
Warning lamp switch
509
Panel lights
40
Fuel level gage and switch
29-31
Engine instrument and master warning light 27
Master switch
459A
Master switch
459
Ground
GND
Parking brake warning switch and light
509E
Parking brake warning light
509E
In-tank fuel pump and generator system relay 76B
Connector
Wire
No.
Electrical Lead To:
No.
18
19
20
21
22
23
24
25
26
27
28
29
Starter switch — neutral safety switch
14
Flame heater electrical lead (engine model
7083-7396) or glow plug switch
(engine model 7083-7391 )
486A
Connector to 415 air cleaner blower
motor relay
27B
Accessory control box
400
Flame heater electrical lead (engine model
7083-7396) or glow plug lamp
(engine model 7083-7391)
486
Not used
415
Not used
588
Not used
588L
Not used
588-588L
Voltage regulator
400-459B
Bulkhead connector
Portable instrument connector
8-123
TM 9-2350-311-20-1
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