TM 10-4610-215-24
TM 08580A-24/2
Table 2-2. Troubleshooting (Trailer) (ARMY) CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM – continued
2. LIGHTS OPERATE INTERMITTENTLY.
Step 1.
Visually and manually check cable assembly connectors and towing vehicle mating receptacle
connections for proper contact.
Tighten all connectors to ensure proper contact.
Step 2.
Visually check all contacts for contaminants such as oil, water, dirt, and corrosion.
Clean all connectors to remove corrosion and contaminants.
Step 3.
Visually check entire cable assembly and wiring harness for partially severed cable or harness.
a. Repair or replace damaged cable.
b. Replace damaged wiring harness.
Step 4. Check that ground wires on trailer and towing vehicle are making proper contact.
Clean ground wire connections and secure tightly as necessary.
3. LIGHTS ARE DIM.
Step 1.
Check trailer cable to be sure there are no damaged or broken wires or corrosion on contacts.
Check ground wire both on the trailer and on the towing vehicle.
a. Repair or replace damaged cable.
b. If cable is not damaged, clean all contacts to remove contaminants.
c. Clean and tighten ground connections.
Step 2. Check that correct lamps are installed, and securely seated in their sockets.
Replace composite light assembly.
4. WRONG LIGHT GOES ON.
Check the cable assembly coding and voltages.
a. Check voltage of cable assembly.
b. If 24–vdc is not present, repair or replace cable assembly.
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