if you pop the switch knobs off , then pop the switch plate off, and finally, remove the gasket aroudn teh edge and undo the two screws you can pull the switch mechanism out. You have to unplug the plugs from the bottom of the black piece. Fromt here, if you have two wires with prongs on the end (like for a multimeter) or put nails in the clips, you can figure out how to jump the switch in the plug slots. This used to be hwo I ran my seats. You have to use two wires though, its some kind of weird arrangement of 4 diffferent slots. I think one of the slots is power, the slot next to it is ground (use a voltmeter to check), and you put one wire in each then with the other ends put them in random places and youll figure out which way you need to do it.
Then you can also take apart the switch assembly, and do it in a box so you dont lose all the parts, because inside si a bunch of springs, pivot washers, and miniature ball bearings. If you clean these up well from all corrosion, carefully balance them in their correct position, and snap the housing back together (hoping they all stay where they should be, a little grease might help) then you have a pretty good chance the switch will work again.
the switches are 110 new last time I checked.. it's worth a try.
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