bacevedo

I think I’ve seen almost every wiper motor video and forum topic on this but still need help.



I pulled my wiper motor to replace the anti-drip / headlight washer valve but on inspecting and cleaning the motor. I pulled out the 3 prong connector.

in the image you can see what looks like a resistor (broken but wire is intact) attached to fast wipe terminal on one end and a loose wire on the other.

I tested the motor for fast, slow and park
And they all seem to work as displayed with the end wire unattached. So the q is what does this do and how would it connect? My best guess is that it ground to the housing?

Is this part serviceable? I can’t find any online? Or is the only option to replace the whole unit?

thanks
Bill

Mooser

It is (was) a resistor. The ceramic core is frequently broken but the coil wire is the actual working part. The end wire was just Vee bent around the housing post under the plastic relay/switch body beside it


M

bacevedo

Thanks ...this is exactly what I could not find anywhere.

Does anyone know as source to purchase the 3 prong connector new?
I hate to put mine back in with that frail looking resistor wire.

Bill

Mooser

I don't know of a source for the connector but there was a thread a couple of days ago (https://www.corvetteforum.com/forums...buildable.html) about a wiper motor and they gave a couple of sources for having them rebuilt.
I just put a new resistor in mine since I'm not to concerned about originality at this point
M

bacevedo

Thanks Mooser this link is very helpful

Gale Banks 80'

Lectric Limited.

bacevedo

I e-mailed Sam at "classicwipers" and he mentioned that the ceramic resistor behind 3 prong connector ...." It's purpose it to eliminate "voltage runaway" on high speed. If your alternator starts to produce high voltage, that can make the wiper motors move at an undesirable speed. If that happens, you simply turn the wipers to low."

He also said the commonly just remove it but when they rebuild a motor they will use a modern equivalent since no on re-produces the original part.

Hope this helps someone down the road with similar issue

Mooser

M