Re: How do I fix the reverse lights
Search "TKO reverse switch" here, been covered many times. Just need to extend the pink and green wires from the OE switch at the base of the steering column (assuming it is an original Z) to the reverse lamp switch (two terminals) on the side of the TKO.
Front turn signal on a 69 can often be a ground issue; light grounds through the housing to the valence panel, and either corrosion or paint can cause issues with the grounding.
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!