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79 wipers quit working

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Old Mar 2, 2010 | 12:39 AM
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Default 79 wipers quit working

I replaced the relay today and that didn't fix the problem. Anyone know how I can test the motor before I spend $100 on a new one?
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Old Mar 2, 2010 | 01:13 AM
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Default This might help!

There's a how to published by Willcox just go on the left and click on Willcox and enter 1979 repair and troubleshooting wiper

Last edited by Peterbuilt; Mar 2, 2010 at 01:16 AM.
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Old Mar 2, 2010 | 03:08 AM
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http://willcoxcorvette.com/instructi..._and_newer.jpg
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Old Mar 2, 2010 | 10:32 AM
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Or you can watch this video. The 1973 and newer motors test out the same way. Power to the yellow center wire, ground the outers for speeds. You must power up the red wire coming out of the can too!

1969-1972



Willcox
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Old Mar 2, 2010 | 01:02 PM
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The video was great. Tested the motor and its was good. So at that point I started testing voltage up to the motor. This is where I found the Ground wire was no good. I grounded the motor and it started right up. So my question is... Should I just leave my temp ground or should I rerun the original ground? That seems like a lot of work since its all wrapped up. Does anyone know where the original ground runs too?
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Old Mar 2, 2010 | 01:55 PM
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Your "New" ground wire will work OK. The original is a black wire that attached to a bolt on the starter or bell housing.
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Old Mar 3, 2010 | 09:37 PM
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Good Deal Brian-

The ground you are speaking of and as Pete said runs to the bell housing.. But this same ground is also in the blower motor circuit.. so you should make sure that the blower motor is working fine too! If you are having problems with your blower motor..... Well... you just may have figured two problems out for the price of one!

Willcox
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Old Mar 4, 2010 | 11:06 AM
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Originally Posted by Willcox Corvette
Good Deal Brian-

The ground you are speaking of and as Pete said runs to the bell housing.. But this same ground is also in the blower motor circuit.. so you should make sure that the blower motor is working fine too! If you are having problems with your blower motor..... Well... you just may have figured two problems out for the price of one!

Willcox
This is great news because I DO have a blower motor that is not working. Thanks for the info guys. I guess when the motor was replaced this just didn't get hooked back up. Well that is what I am hoping for anyway.
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Old Mar 4, 2010 | 11:35 AM
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Originally Posted by Willcox Corvette
Good Deal Brian-

The ground you are speaking of and as Pete said runs to the bell housing.. But this same ground is also in the blower motor circuit.. so you should make sure that the blower motor is working fine too! If you are having problems with your blower motor..... Well... you just may have figured two problems out for the price of one!

Willcox
Ernie you are a star! Pretty sure I have blower issues and am sure the PO hooked the black wire up to the starter as it is hot instead of ground! IIRC there is a hot black at the starter...perhaps the PO just got confused!
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Old Mar 4, 2010 | 01:39 PM
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thanks for the post.
I have the same problem. I belive it is a bad connection in the motor.
Ill looke at the video.
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Old Mar 4, 2010 | 07:20 PM
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Thanks Jotto:

I hope you guys find your problems!

Willcox
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