Driving to the Indy Auto show, in my '88 C-1500 that we just put the HO Camaro 5.0 in, my wipers suddenly came to life on their own. My hand was NOWHERE near the switch!!

They came on for one sweep and then stopped. Then a little later another sweep, then another soon after and finally they just stayed on!
I had to stop and unplug the wiper motor.
I just cleaned the switches, on the wiper motor, and they now seem to be behaving.