Windshield Wiper Switch

[cuda426]

My windshield wipers on my 1973 Barracuda went on without rotating the round on/off knob. I was able to turn them off so they were resting at the bottom of the windshield. But when I commenced to drive the car I noticed some smoke coming from the switch. I disconnected the wiring harness plug to the switch and the problem went away. Do you think I have a short across the switch?

Thanks, Bill

 

[Katfish]

Is this a trick question?
From what you describe it appears so.
Swap in another switch and see what happens.

 

[cuda426]

is there a method to check the switch with a continuity tester to determine if its defective or not?
thanks

 

[Challenger RTA]

Power for the wiper sw comes off of splice 3 that feeds the acc side of the fuse box, via the ign sw.

 

[Katfish]

Possible to test 3 speed wiper switch?

I got a 3 speed switch, 378, and was wondering how to test it to make sure it works correctly. Anyone have know how to do so? Do you need a 3 speed wiper for testing the switch?

board.moparts.org

 

[devinism]

I would be taking a serious look at the firewall junction box and all of the wiring. They would have a difficult time turning themselves on by themselves via the switch. Sounds like something fed back through the switch wires (some of which go to ground via the switch case.

Please disconnect your battery!

 

[Challenger RTA]

I'm thinking it's the park switch malfunctioning. Drawing to much current when hanging up. 2 speed or 3?

 

[cuda426]

Thank you, the wipers were in the parked position when the switch stared to smoke. Where is the park switch located?