R&R the fuses and polish all the fusebox electrical contacts first, then R&R the potentiometer (which is repairable according to an earlier thread...search for potentiometer repair). I prefer to replace the pot with a new one since all the trouble to get to it is not worth having to do it again later.

Those things do not tolerate a moist environment that can develop due to the leaks that are apt to happen if the windshield seals are not replaced when needed or the sunroof drain chanels are not kept clear.

motor on










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Bama1


2008 SLK 280, Firemist Red - "Hurricane"
2001 F150 Lariat 4x4, Black on Black - "Badboy"
1982 240D 4 speed survivor -"Pearl" - Donated to Vietnam Veterans
1962 Oldsmobile Dynamic 88 -"Gertrude"

1954 model original owner - ~2.5M
Gray softtop/solid exterior/modified chassis