69 4-speed car, have not found this issue anywhere. I just replaced the rear wiring harness and the tail light grounds (50 years old, was having a ground issue with left rear tail light). When I hooked the battery back up, all of the parking lights were on (front, rear, and side markers including the tail lights and back up lights). The head lights and dash lights were not on. I checked the headlight switch, it was working correctly and even replaced it...with the same results. I reviewed the wiring diagrams, I cannot find where a ground has been overlooked. Also, on the left side tail lights, I was checking for ground issues, as I turned the bulbs in their respective sockets in the tail light housing, the lights would brighten or dim, depending on which way the socket was turned. Any ideas?