Wiper issues

[joshuars]

Hello,

I recently purchased a 1983 K5 Blazer and have had trouble with the windshield wipers. The wipers were unhooked at the motor/firewall when I purchased the K5 and when I plug them back in the wipers are on all the time. From what I have read the modules can be problematic and are not available aftermarket for these years. I have attached photos of my module. I have already tried replacing the switch to no avail. I am guessing since the motor works when plugged in that replacing the motor would not help. Would I be best off trying to bypass the module in some way? I found a YouTube video showing a way to have high/low with a simple relay…

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. I’m thinking I could do something similar with a factory switch and motor. Any suggestions would be greatly appreciated. Cheers!

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[pinballlarry1]

Don't forget to check the parking position switch on the wiper motor, it could be stuck closed or not opening when the wipers get to the bottom of the windshield. Simple 2 wire connector near the top of the wiper motor assembly, and gently remove the black cover to get access to the switch:

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This switch contact OPENS when wipers reach the PARK position, and CLOSES whenever not at PARK position. The metal arm rides on the plastic cam wheel:

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Simplified wiring wiring:

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