got an 89 rex. previously had custom stereo cause factory harness was cut and we wired speakers from stereo, not car harness. also had a autometer tachometer. took everything out and then the tail lights stop working. i determined that the fuse kept blowing everytime i put one in. (slot # 12) also the seat belt warning comes on every time the brake is pressed. lights work but brake lights does not come on when brake is pressed. no wires are touching.