I am having problems with my brake lights not working. I have tried everything under the sun. I replaced the circuit boards at the tail lights, I replaced the brake light switch beside the brake pedal, replaced the turn signal switch. I was blowing fuses for a long time with the hazards and brakelights, then replaced the tss and the hazards work now along with the park lights and the turn signals, but none of the three brake lights work. I tried checking the harness at the back of ther truck and everything worked fine, but when I hooked the light indicator up on the ground and checked the lights with each on the turn signals worked fine and the park lights, but the white wire would light up when I pushed on the brake pedal. But I thought the white wire was a ground. How do I trace that wire back and what should I do about this problem?