Short should blow the fuse, no?
Bad ground would cause the light to just be out, not burn out filaments on the brake side. (dual filament)
Bad connector is possible, but it's still burning them out, not just a wiggle it and it's fixed scenario.
Housing is clear of condensation.
This is why this has me stumped, all of the typical easy fix solutions are fine. My only thought is that the truck is some how over powering the brake light circuit, but why then only the right side and not left too?
Originally Posted by annguyen1981
bad connector to the bulb.
Condensation forming inside the taillight housing.
I know there was another one that I had in my head, but after typing those 4, I can't remember.