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On my '87, I found that the short black ground wire that comes out of the switch box casing to the dash grounding ***** was stiff, fragile and almost broken off the case itself. Was a 15 minute fix after I had diagnosed the problem (but no, I didn't try to solder the wire to the case--I just mixed up some JB Weld and then taped the crap out of it)Check the connections for corrosion first.
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