Adding Power Windows
 

Could any one tell me what is needed to convert manual windows to power windows in a 1978 SC? Thanks

Just two parts from a salvage yard ... one left door, and one right door! Ha-Ha-Hee-Hee ...

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Warren Hall
1973 911S Targa

The parts needed are as follows;
2 regulators
2 motors
2 door panels
3 switches
1 wiring harness (window system only, its separate)
Your best bet is to get these from a wrecking yard. The only hard part is the wiring harness routing. Make sure you watch as they take it out of the donor car. It's really a simple switch if you have all the parts. The doors are the same. E-mail me if you have any specific questions.

On the other hand, somebody sells a kit (for $99 or $199, I think) that allows you to use the existing winder mechanisms and just inserts the power via a cable from an added motor and the appropriate switch/button to make it all work --- behind the door panel where the hand crank would go. I don't have any personal experience with these so I can't speak for their reliability, etc. and I can't remember who sells it but I could did around if you're interested...