Well my tail light doesnt work (in the running position) i lights up fine when i break. Its only the smaller bulb that doesnt light up. Ok so text book awnser: the light bulb or the fuse right? replaced the fuse which was burnt but still no light. Swapped the bulb from the left one (right side is the one with the prob) into the right one still no light. Second text book awnser: the wiring is loose. Result: its not. So what could be the deal? any one with similar problems?/awnsers?

 

check it with multimeter. Bad wire/disconnected wire somewhere

 

I had a similar problem, but it was the bulb. If you get voltage to the connecter, its not connecting to the bulb.