What I want you to do is check each light circuit to a ground on the vehicle to see if there is continunity. If there is to ground, that is a problem. However, please keep in mind, there will be a ground wire for the lights too.
It it my belief that either you have a direct short to ground or the circuit board itself has a bad spot that can't be seen. Therefore, check the circuit board for continunity too.
Wednesday, December 7th, 2011 AT 1:31 AM