1997 GT turn signal problems. I replaced all of the bulbs, 6 in the back and 2 up front, I've swapped the bulbs around and they all are good. The inner bulbs on both sides in the rear do not work, the outer 2 bulbs on both sides in the rear work. The front right works, and the front left does not. The left side blinks fast. In the front, I swapped the bulb and the bulb socket from left to right with no change. That makes me think it is the wire harness on the front left side. The thing that is throwing me off is the inner bulbs in the rear are not working. Any ideas?