I've got one of my backup lights out. I went to replace it a few months ago, and it was light up a bit more dimly than the other side. I decided to just roll with it for the time being and deal with it later.

I'm now "dealing with it". I ordered the proper bulbs off rockauto (same voltage/wattage as the one that works properly), and it won't light up at. I swapped in the working bulb from the other side, and that didn't work either. So something weird has happened. I'm not an electronics guy - what to do?

 

1) all the bulbs share common ground. While many of us have replaced the ground wire, both as precaution and or a fix, if your other bulbs light the small ground wire isn't the culprit.
2) corrosion: these sockets, and sometimes the bulb base, need attention once in a while.

If the bulb works fine on the other side, let's focus on the socket. Two ways to clean it: a plain old pencil eraser is a great cleaner for the contacts. OTOH inserting and removing multiple times brushes contacts clean.

Let's start there. Summary: are other lights ok in that pod? Bulb works ok on other side? Clean contacts and let us know.

John

 

Might also check the wire from the body to the trunk(right side on hinge). I had problems with my lights, and a broken wire was discovered in that bundle.