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
Start at the tow vehicle 7 pin connector. Do you have power to the pin? If no, the problem is in the tow vehicle.
If yes, plug in the TT cord and pierce the wire to the marker lights. Do you have power? If no, the problem is in the TT plug connection.
If yes, keep following the wire toward the lights testing. When you lose power, the problem is between the last reading with power and the first reading without power.
If yes, plug in the TT cord and pierce the wire to the marker lights. Do you have power? If no, the problem is in the TT plug connection.
If yes, keep following the wire toward the lights testing. When you lose power, the problem is between the last reading with power and the first reading without power.
