TM 9-2330-394-13&P
ELECTRICAL SYSTEM THEORY OF OPERATION - Continued
0004 00
TRAILER ELECTRICAL SYSTEM
The trailer electrical system is dependent on the towing vehicle electrical system. The towing vehicle
electrical system must be operational in order for the trailer electrical system to be operational. The
trailer lights and ABS ECU operate on 12 vdc.
All power to the trailer lights and ABS ECU is routed from a 12 vdc (7-pin) intervehicular cable or a 24
vdc (12-pin) intervehicular cable to a voltage converter box before allowing power to flow to the lights or
ABS ECU.
0004 00-2