I have the "Mustang Sequential Taillights Kit - Plug-in" from AM and today my brother noticed my passenger side doesn't turn on at all.

When I put the hazards on the most inside bulb just turns on a bit (very dim) and the rest don't work at all.


Anyone know what could be wrong? The bulbs look fine but I'm going to change them out with the other side to check them. Could the harness be broken?


Any help would be great.

 

Just swapped the bulbs still have the same problem. Anything thing it could be besides the harness? Rest of the lights on the line, rear corner and plate bulb, still work.

Fuse looks fine too.