I just have completed a ground up restoration on my 1969 Z28 4speed of course and I actually have two stupid questions. You would think that after having every nut and bolt out of the car that I would know the car inside and out. I do not remember a back up light switch as well I have no back up lights when car shifted into reverse? Any ideas where the switch is located? I noticed that there are two purple wires that are spliced together near the lover part of the steering column could that be the wiring to the back up lights? Also one other problem is that with the headlight on the front directions in the lower valance do not flash but work without the headlight on like they should normally. How could a one prong socket for the front lights be able to perform two duties parking and turn signal? Any ideas?