RVing Drives Me Nuts ---- Electrical Issue

Hoppypoppy wrote:
Please forgive my ignorance, but I am an electrical illiterate. I went back to the 5er and tried all the suggestions I had received at that point. More came in later, and I hope to go back again today. (little under the weather) My latest question.....is it possible, the ground wire in the power cord is itself grounded to the pin box itself? This may be the ultimate in stupid questions, but I want to eliminate all possibilities before I tear into the light fixture itself. One of the problems I am having in locating a ground wire is, the trlr is an All Season so no access from underneath. Thanks again for your help and patience.

The three posts prior to yours are the most accurate. This problem is not related to your 7-pin connector given the symptoms you report. It appears you have a single bulb system. The only things common to the tail, brake and turn lights are the bulb itself, the socket with the ground (common) connection and the ground wire to wherever it connects to the ground for the rest of the lights that do work.

Start by removing the bulb and ensure a good clean connection to the socket. Make sure you have a good bulb. Let us know what you find.