Why does the rear window defroster cause the radio to quit working?
you either have a blowed fuse or a wire crossed
If the radio and air conditioner and rear window defroster stopped working on 1995 contour what would be the cause?
Inside the right rear window - it's the wiring molded into it. The Windstar radio antenna is molded into the right rear window glass its simple really look on the right rear vent window it looks like a defroster but it is not it is a built in antenna Never mind, just found it. It's in the right rear vent window.
There is a radio/defroster interface module behind the passenger-side c-pillar. Pop the plastic off and eliminate the plug, which has melted and broken the connection. By splitting the module's case, you can solder some suitably sized wire directly to the plug tabs. Then use butt splicers to connect the leads to the car's wiring.
Check fuse first (see owners manual for location). Second, check lines on window interior to see if there is a break which might have been caused by a scratch. If there is, you can purchase kit at auto parts store to repair scratched metal lines on window. If none of these appear to be the problem, consider replacing switch (behind the dash, near radio. The switch is a big job because you have to remove…