wiper motor wiring issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

flashdad · 06-01-2013, 09:40 PM

hey guys, I haven't found an answer to this issue in the forum: My wipers weren't working so I pulled it and tested it, it works fine. So I figure it's in my wiring. I cut and rerun all the wires except the power wire and it still wouldn't work. So, I cut the yellow power wire and connected it to the open cig lighter spot on the fuse box...they work! however, when i went to reconnect the wiper arms to the motor, when I touched it with a screw driver, it sparked and the motor began running when the screw driver made contact. I'm no electrical guy, so I'm just doing what I can. Can someone help me fix this correctly? Hard to drive here in Oklahoma with the storms and no wipers. Thanks in advance for any help.

**VetteVet** · 06-01-2013, 09:59 PM

Make sure you ground the wiper motor to the sheet metal. And connect the yellow wire back to the wiper fuse. I think the cig terminal is hot with the key off and you don't want that because when you grounded the motor it completed the circuit and took the place of the switch and completed the ground. The switch makes and breaks the ground side of the motor not the hot side.

Stay safe out there and hope you and yours are all OK.

flashdad · 06-01-2013, 11:21 PM

Thanks for the info, yeah we're all safe, just a lot of wind damage. Which fuse is the wiper fuse? All of the labels are rubbed off on the fuse box and the photos/diagrams I found on Bing are either too blurry to see or for a newer model of truck. thanks again.

**Daddy Brim** · 06-02-2013, 07:39 AM

Wiper fuse is far lower left, also wiring digram.

**WIDESIDE72** · 06-02-2013, 09:43 AM

Not to be a know it all but you need to invest in a volt meter or test light in the least and some jumper wires andnot start cutting wires right off the bat. You will appreciate it later.
Posted via Mobile Device

flashdad · 06-02-2013, 11:08 AM

thanks for the info Brim. That will help immensely now and in the future.

flashdad · 06-02-2013, 05:36 PM

That fuse box diagram did the trick. All working now. Thanks again.

06-01-2013, 09:40 PM	#1
flashdad Registered User Join Date: Sep 2008 Location: Yukon OK Posts: 70	wiper motor wiring issue hey guys, I haven't found an answer to this issue in the forum: My wipers weren't working so I pulled it and tested it, it works fine. So I figure it's in my wiring. I cut and rerun all the wires except the power wire and it still wouldn't work. So, I cut the yellow power wire and connected it to the open cig lighter spot on the fuse box...they work! however, when i went to reconnect the wiper arms to the motor, when I touched it with a screw driver, it sparked and the motor began running when the screw driver made contact. I'm no electrical guy, so I'm just doing what I can. Can someone help me fix this correctly? Hard to drive here in Oklahoma with the storms and no wipers. Thanks in advance for any help. __________________ '67 Chevy C10 '68 GMC PU '98 Turd F150 4x4 (I think it may be a chevy under the logo it's such a good truck) '10 Mustang "Life's tough - it's even tougher if you're stupid." John Wayne

06-01-2013, 09:59 PM	#2
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: wiper motor wiring issue Make sure you ground the wiper motor to the sheet metal. And connect the yellow wire back to the wiper fuse. I think the cig terminal is hot with the key off and you don't want that because when you grounded the motor it completed the circuit and took the place of the switch and completed the ground. The switch makes and breaks the ground side of the motor not the hot side. Stay safe out there and hope you and yours are all OK. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

06-01-2013, 11:21 PM	#3
flashdad Registered User Join Date: Sep 2008 Location: Yukon OK Posts: 70	Re: wiper motor wiring issue Thanks for the info, yeah we're all safe, just a lot of wind damage. Which fuse is the wiper fuse? All of the labels are rubbed off on the fuse box and the photos/diagrams I found on Bing are either too blurry to see or for a newer model of truck. thanks again. __________________ '67 Chevy C10 '68 GMC PU '98 Turd F150 4x4 (I think it may be a chevy under the logo it's such a good truck) '10 Mustang "Life's tough - it's even tougher if you're stupid." John Wayne

06-02-2013, 07:39 AM	#4
Daddy Brim Senior Member Join Date: Feb 2011 Location: Clovis Ca. Posts: 632	Re: wiper motor wiring issue Wiper fuse is far lower left, also wiring digram. Attached Images __________________ I'm sorry I called you stupid. I thought you knew already. 67 C-20 Custom Camper 68 Nova 396 it does wheelies 2005 Buick Century the one the wife drives 1989 Toyota Tercel to drive when I can't put gas in the first 2.

06-02-2013, 09:43 AM	#5
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,500	Re: wiper motor wiring issue Not to be a know it all but you need to invest in a volt meter or test light in the least and some jumper wires andnot start cutting wires right off the bat. You will appreciate it later. Posted via Mobile Device

06-02-2013, 11:08 AM	#6
flashdad Registered User Join Date: Sep 2008 Location: Yukon OK Posts: 70	Re: wiper motor wiring issue thanks for the info Brim. That will help immensely now and in the future. __________________ '67 Chevy C10 '68 GMC PU '98 Turd F150 4x4 (I think it may be a chevy under the logo it's such a good truck) '10 Mustang "Life's tough - it's even tougher if you're stupid." John Wayne

06-02-2013, 05:36 PM	#7
flashdad Registered User Join Date: Sep 2008 Location: Yukon OK Posts: 70	Re: wiper motor wiring issue That fuse box diagram did the trick. All working now. Thanks again. __________________ '67 Chevy C10 '68 GMC PU '98 Turd F150 4x4 (I think it may be a chevy under the logo it's such a good truck) '10 Mustang "Life's tough - it's even tougher if you're stupid." John Wayne



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