which fuse or relay goes to the taillights they wont turn on when I turn lights on but they work when I hit the brake or signals. one more thing when I have it floored I feel a studder or vibration. feels like diff maybe or kinda like wheel hop? it was ok before I put stock exhaust back on. I did reset ecu because of test pipe. I dont know I have been so busy with paint header top and bodywork my mind is a clusterfwk. help me out!!!!