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Old 02-12-2015, 05:45 PM   #1
happyhunky
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Wiper ground

On a 57 factory electric wiper setup, do I need to run a ground wire or will the mounting in factory brackets suffice or the ground?
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Old 02-12-2015, 06:16 PM   #2
octanejunkie
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Re: Wiper ground

That is a good question

I believe the units were internally grounded (grounded off the cab mount) but if your motor housing or mounts are rusted you may want to attach a ground wire to be sure.
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Old 02-12-2015, 07:42 PM   #3
OrrieG
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Re: Wiper ground

Yes, wiper body grounds thru the bolts to the cab. rust or fresh paint will keep it from grounding. If painted chase the threads with a tap. If rusted add a ground wire from housing bolt to good bare metal.
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Old 02-12-2015, 07:56 PM   #4
Clarance J
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Re: Wiper ground

Here are some pictures from my 55.2 wiper motor that I finished working on recently. It does need a ground wire if you have the rubber vibration grommets installed. Maybe the mounts changed by 57, I'm not sure but a ground wire wouldn't hurt.

Earl
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