Organizational Troubleshooting Table
TEST OR INSPECTION
ELECTRICAL SYSTEM - continued
ALL LIGHTS DO NOT LIGHT - continued.
Check setting of light switch on towing vehicle.
Set light switch properly.
If light switch is set properly, go to step 3.
Check circuit breaker on towing vehicle.
If circuit breaker is open, reset circuit breaker.
If circuit breaker is not open, go to step 4.
Check wiring for bare spots in insulation.
If wiring not defective, go to step 5.
Check ground connector for loose or broken connections.
Repair or tighten ground connector.
ONE OR MORE LIGHTS DO NOT LIGHT.
Check for burned out lamp.
If lamp does not light, go to step 2.
Check for broken or shorted wire in cable or loose connection in plug
Tighten, repair or replace as necessary.
If wiring and connections not damaged, go to step 3.
Check for damaged light assembly.
Replace light assembly, if damaged (paras. 4-22 through 4-25).
If light assembly is not damaged, go to step 4.
Check lamp socket for dirt and corrosion.
Remove lamp and clean sockets, if dirty or corroded.
If lamp socket is clean, go to step 5.