84 Pace Car headlight system. Rebuilt both motors with new Rodney parts. Bought new relays (all 3) to use as test set.
Original problem: Drivers side would not go up. It made no noise and did not spin or continue to run-on. One of our beloved list guru's advised that the isolation relay had to be bad. I then hand cranked up the drivers side. Now, after turning off the lights, the driver side stays up as it should, but the pass side stays up also, for about 2-5 minutes. It then goes down spontaneously like it has a slow leak.
I decided that the motors probably needed rebuilding anyway, so before trying any relay changes, I just installed the rebuilt motors.
Drivers side works perfectly. Passenger side still stays up. Swapped in all new relays one at a time. No change. Took pass side motor out and clocked the connecting link 180°. No change. Disconnected power to pass side motor and cranked it down. Repowered motor in the down position and it goes up, with the headlight switch off.
So now, in the at rest position with the headlight switch off, the drivers side light is down as it should be and the pass side is up.
Anyone have a thought on this?