Hello,
Just got a 70 Coup Deville. Have only had it 3 days so I have not been able to do much troubleshooting.
The front windows do not work from either postion. The rear windows will work from the driver postion but not from their own switches. It appears there is just one main power wire so if the rear windows work then I would think it is not a fuse issue.
Trying to determine if it is the switches or motors. Appears 2 wires come out of the switch so I would think 1 would be up and 1 would be down however used ohm meter on a rear switch that I knew worked and found continuity out of both wires when the switch was moved so I am not sure how it is wired. I can jump the switch but need to know how.
Jeff