crazymikey
+1y
Sounds like a bad socket. You can clean it,or just as easily find a replacement harness from another truck. Have a bad contact in your socket could also mean you may run into poor grounding problems later on,especially since you live in Sask. You'll probably end up running into some more electrical gremlins over the course of the winter.
I had to redo all my grounds on the frame for my tail lights and clean all my sockets and spade connectors in the plugs. I've had my tails light go screwy like when I turn on my left signal,both my brakes flash,or I hit the brakes and my turn signals dimly light up while my running lights go dim.
I also had a front parking light with a bad ground that kept blowing the fuse and leaving me with no tail lights at night.
All my problems were winter and corrosion related.