RV Troubleshooting

RV Trailer Brake Lights Not Working

Trailer-light faults can involve the tow vehicle connector, grounds, wiring, fuses, lamps or junction boxes.

What to note before diagnosis

Why a mobile technician may help

A technician can verify power, controls, wiring, plumbing, mechanical condition and component-specific faults rather than replacing parts based only on symptoms.

Do not guess with safety-critical systems

Propane, 120V electrical, brakes, bearings and structural or roof damage may require qualified inspection. Stop using equipment that appears unsafe.