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Unread 10-24-2011, 07:35 PM   #1
mgfi26
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1989 YJ Wrangler 
 
Join Date: Mar 2011
Location: crawfordsville, IN
Posts: 16
89 YJ Wiper Woes

I attribute this problem mostly to my lack of waving at other jeep drivers as they pass and happily wave. So, if anyone can help me with this issue I promise to return the wave for a period of at least two weeks. Problem - Wipers not working. Symptoms - Turn on switch and nothing. What I have done so far - Checked fuse, checked circuit breaker (assuming normally closed, good continuity good) Jumpered motor directly to battery, motor turns, When I check the incoming wires, assuming green is ground, black and white are high and low power I get -12v at both. I'm not real sure if the last part is correct regarding the high and low power but I'm definitely getting -12v instead of just 12v. This is the part that has me a little confused. Anyway, any help is appreciated and will be returned with happy jeep waves.

Thanks,

Matt


Last edited by mgfi26; 10-24-2011 at 07:36 PM.. Reason: spelling
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Unread 10-24-2011, 07:50 PM   #2
dancytron
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1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: st. louis
Posts: 1,117
See wiring diagram in this thread. At the motor white is low, red is high, black is ground. Green and blue have to do with parking feature.

http://www.jeepforum.com/forum/f12/y...-wires-628552/
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Unread 10-24-2011, 07:53 PM   #3
mgfi26
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1989 YJ Wrangler 
 
Join Date: Mar 2011
Location: crawfordsville, IN
Posts: 16
Thanks for the input. I did forget to mention that I also used the ground direct to the battery and came up with -12v. That's what I don't usnderstand, why I'm getting a reading of -12v?

Thanks!
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Unread 10-24-2011, 08:11 PM   #4
Old4X
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1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 4,147
If you have intermittent wipers, there is a module that is plugged in-line in the wiper harness under the dash. (IIRC, it is velcroed to a flat piece of metal under the dash left of steering column).

Pull the wiring down and remove the intermittent box, then just plug the harness back together without the box. See if your wipers work now. You should have OFF- LOW- HIGH and park.

These boxes give problems, though it is often just 20+ year old connectors that are gunked up, a good cleaning often makes them work again.
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Unread 10-24-2011, 08:25 PM   #5
mgfi26
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1989 YJ Wrangler 
 
Join Date: Mar 2011
Location: crawfordsville, IN
Posts: 16
I knew there was a module and was looking for it earlier. When you said velcro, that helped me find it. I removed it and plugged the two harnesses together directly and that did it. Now though, the motor runs but the wipers don't move. I'm assuming there is a stripped gear or at least improper connection mechanically. Will have to check tomorrow, too tired tonight. Thanks for the help though!!
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