Wiper motor or switch
Thread Starter
Racer
Joined: Nov 2004
Posts: 432
Likes: 23
From: Saint Paul Va.
Wiper motor or switch
My 79 that I purchased a couple months ago has a problem, when I switch on the wipers the arms/blades only come up about 2'' off the park and stop, I can start them by hand and they work great..would this problem be in the wiper switch or the motor?? Thanks
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
First let’s take the motor either in or out of the equation! Un-plug everything from the motor and then run a independent ground to the motor case.
On the motor there is a three wire connection. Have this un-plugged. Put some water on the windshield and run 12 volts to the center terminal on the motor.
Then run a ground wire to the terminal farthest away from the actual wiper motor can. This should give you high speed wipers.
Next run a jumper ground from the outer terminal to the one closest to the motor can. This should give you low speed.
If the motor works the same way you described above, then yes it’s motor time. If the motor functions properly then it is fine and you have another issue.
If you want to see this connection we have a help page designed for the 1968-1972 motors, but the test is the same. Go to this link and you'll see what I'm talking about. http://willcoxcorvette.com/repairand...elp.php?hID=95
Willcox
On the motor there is a three wire connection. Have this un-plugged. Put some water on the windshield and run 12 volts to the center terminal on the motor.
Then run a ground wire to the terminal farthest away from the actual wiper motor can. This should give you high speed wipers.
Next run a jumper ground from the outer terminal to the one closest to the motor can. This should give you low speed.
If the motor works the same way you described above, then yes it’s motor time. If the motor functions properly then it is fine and you have another issue.
If you want to see this connection we have a help page designed for the 1968-1972 motors, but the test is the same. Go to this link and you'll see what I'm talking about. http://willcoxcorvette.com/repairand...elp.php?hID=95
Willcox
