wipers and lights on 1992 Chevrolet 1500 Pickup

with key on and lights on when you turn on the high beams the wipers come on, turn back to low beam and wipers turn off

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1 answer
I believe the high beam switch is also the wiper switch - this is the multifunction switch. I sense that this is the combination turn signal, wiper and high beam switch.

This is where I would suspect the issue is.