TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 74 of 1337
TM 9-2320-260-20
1-20. ELECTRICAL SYSTEMS OPERATION (Contd)
g. Lighting System Operation.
The lighting system is identical for all models covered in this manual and consists of the following
major components and circuits:
A
B
C
D
E
F
G
SERVICE HEADLIGHT
– Receives power from light switch through circuits 17 and 18 for
vehicle night operation.
FRONT COMPOSITE LIGHT
– Receives power from turn signal control through circuits 460
and 461 to indicate turning direction.
PANEL LIGHTS
- Receive power from light switch through circuit 40 to illuminate instrument
panel.
REAR COMPOSITE LIGHT
- Receives power from light switch through circuits 21,23, and 24
to indicate turning direction.
LIGHT SWITCH
- Directs power to vehicle and accessory lights.
HIGH BEAM INDICATOR LIGHT
- Receives power from high beam switch through circuit 17
to indicate headlights being switched from low to high.
HIGH BEAM SWITCH
- Receives power from light switch through circuit 16 to switch
headlights from low to high.
BLACKOUT HEADLIGHT
- Receives power from light switch through circuit 19 for vehicle
blackout operations.
1-61
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