Here is the issue I am having with my trailer lights, which are incandescent dual filament type.
1) I plug the pigtail to the vehicle
2) I turn on the turn signal or hazard. The vehicle lights work but the trailer lights do not. (An electrical test shows the socket is getting power.)
3) I take out a bulb, turn it 180 degrees, and push it into the socket. (It won't plug all the way in since the offset pins do not match) **The bulb lights up.**
4) I turn the bulb 180 degrees and insert in properly into the socket. The bulb lights up and works properly.
The bulbs will continue to work properly until I turn the turn signal or hazard off, then back on. At this point I need to rotate the bulb 180 degrees again to get it to work. This is the case with both the left and right bulbs.
The tail lights work fine. The issue is specific to the turn signal and hazard lights.
Any thoughts?