Mine happened when it got wet too, don't know if it is related. I checked the windows and they don't work either, so I am going to start by taking apart the center console and making sure everything looks ok there.
ZAT - when yours went bad, was it the switch for the four ways, a loose connection, something else????
thanks.

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andy t
'78 300d
'95 volvo 850, wagon
'86 300sdl - engine out, maybe I'll have it rolling by June

whole bunch o' bicycles