Right Rear Tail Light

[Brad Heath]

My right rear tail light stopped working. No brake or signal light. The right front turn signal works fine. Problem isolated to right rear. Replaced bulbs and checked all fuses. Even connected the tail light to the left rear and it worked fine. It’s not the tail light itself. Searching for possible remedies. RV is a National Tropical, 2007 diesel pusher.

[Skip426]

Welcome to iRV2.

Sorry you're here with problems .

Have you checked the light's ground wiring for zero ohms ?
The ground wiring on my coach , rear lights corroded where attached to the reflector ; resulting in dim operation.

[Ljwt330]

Use a test light and connect one lead to a solid ground, something other than the ground wire of the tail light. Turn on the brake or turn light and touch the test light to the power connector. Does the test light illuminate? If so, the problem is with the ground to the light fixture. If the test light doesn't light, the problem is on the power side.

[Unplanned Tourist]

Not sure if it applies to your rig, but I have seen that problem and it was the turn signal switch on the steering column. See if you can trace the wire going from it and out to the rear signal/brake light.
This is only if you use the same bulb for both signal and brake.
Happy Glamping.