Running Lights don't work
We have a travel trailer with & a brake controller in our car. The brake lights and the turn signals work on the trailer, but NOT the running lights - what could be wrong?
Forum Discussion
Use a volt meter. Set it to read DC volts. Turn the car's headlights on and make sure that the tail lights are illuminated. Place the black lead of your volt meter on pin one of your seven way connector. Place the red lead of your volt meter on pin three of the seven way connector. If you are reading approximately 12-13 volts, then the problem is somewhere in your trailer wiring. If you do not have a voltage reading, then the problem is with your car's wiring.
