Our project mustang is always turning left. The turn signal cam has apparently broken. Turns right and cancels fine though. Since I haven’t taken it apart yet I was curious do I need the hundred dollar cam with the wiring harness? Or there appears to be a repair piece that just fixes the broken finger. If the repair piece has limited success, I will just order the whole cam. I was just looking for some guidance before I tear it down so it is not sitting for a week with the steering wheel apart.