I have a 68 XR7 that has a small issue with the flashers and signals. A guy pulled up to me and told me I may have a problem because he noticed the left tail light twitching. I checked and signals and lights worked? Flasher works but when I hit the flasher and turn a signal on to make both rear lights do their thing the right side does not work? The front light also is not flashing. The rear left side front and rear works. I looked at the wiring diagram and tried to trace it out?? Any ideas?
Each light bulb is grounded by the socket try moving them around to make sure it is grounded.
I took each one off and cleaned and also put dielectric lube on it. The front one goes out too though. It has the new sequential box and I’m wondering if it may be the problem?