TM 9-2330-373-14 & P
Table 5-1. Troubleshooting
TEST OR INSPECTION
1. ALL LIGHTS FAIL TO OPERATE
Inspect intervehicular cable for proper connection. In all steps, check for good ground connection.
Connect cable properly. Tighten ground.
Inspect for dirty or corroded terminals in intervehicular cable.
Clean terminals in plug and receptacle.
Check to see that light switch on towing vehicle is in desired position.
Place towing vehicle light switch in proper mode of operation.
Check to see that current is flowing from towing vehicle.
Check towing vehicle cables and circuit breakers.
Check wiring harness for short circuit.
Check cable for bare spots. Repair if necessary. Make a continuity test of all circuits, using a multimeter.
Replace defective single wire or replace wiring harness as required.
Check light switch on towing vehicle.
Replace light switch on towing vehicle if it is defective.