changing 2 speed to delay wipers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79GMC_OLDS · 03-12-2008, 09:27 PM

I have the 2 speed wipers in my 79 and i was wondering if i could swap in the steering column with delay from my 86? do i need to change wiper motors or can i just wire the delay to the old motor?
thanks

BowTieOgre · 03-12-2008, 11:03 PM

Im not sure about the column swap but why dont you just buy an intermittent wiper switch/relay from the junkyard. It works great and plugs right in to the 2 spd. wiring plug. There is one on EBAY right now.

Greenlee · 03-12-2008, 11:50 PM

Quote:

Originally Posted by BowTieOgre

Im not sure about the column swap but why dont you just buy an intermittent wiper switch/relay from the junkyard. It works great and plugs right in to the 2 spd. wiring plug. There is one on EBAY right now.

Does anyone happen to know if this would work on a 76'? The guy selling the switch on Ebay says 78' to 83'.

BLE 'BURBAN · 03-13-2008, 12:09 AM

I've got the switch and module on my 81 crew. I'll get pics of it tonight and post them on here so's you can see what the connections look like. If they are the same as your '7 model then they should work. Otherwise you'd have to do a slice-n-splice.

79GMC_OLDS · 03-13-2008, 07:11 AM

ok awesome thanks...so if i wanted column mounted controls i could just wire the delay into the original wiper motor? in other words the motor has nothing to do with the delay

BowTieOgre · 03-13-2008, 07:36 AM

Quote:

Originally Posted by 79GMC_OLDS

ok awesome thanks...so if i wanted column mounted controls i could just wire the delay into the original wiper motor? in other words the motor has nothing to do with the delay

Yeah the delay part is handled by a part that goes between the switch and the factory plug...nothing to do with the motor.

BowTieOgre · 03-13-2008, 07:40 AM

Quote:

Originally Posted by Greenlee

Does anyone happen to know if this would work on a 76'? The guy selling the switch on Ebay says 78' to 83'.

I think the wiring is the same (but I would be incorrect, see below) but the mounting points for the switch are different. Take a look at the LMC catalog.

Sorry for the multiple posts mods.

Pyrotechnic · 03-13-2008, 05:22 PM

Actually...the 77 and down wiper motors are quite different from the 78-83 motors. I tried to put a 78-83 motor on a 77 and it wouldn't work. The connectors don't match up, and there aren't even enough wires. Same on the switch side, the 77 connector is incompatible with the 78-83 switch.

In order to perform the swap, I had to remove all the wiring from the 78 and transfer it to the fuse box of the 77. Also had to enlarge the switch hole in the dash and drill new mounting holes.

Tink · 03-13-2008, 08:26 PM

This guy put delay wipers in his 75 Burban and has some great info:

http://www.rowand.net/Shop/Tech/DelayWipers.htm

03-12-2008, 09:27 PM	#1
79GMC_OLDS Registered User Join Date: Feb 2006 Location: Ontario Posts: 145	changing 2 speed to delay wipers I have the 2 speed wipers in my 79 and i was wondering if i could swap in the steering column with delay from my 86? do i need to change wiper motors or can i just wire the delay to the old motor? thanks __________________ 79 GMC Sierra 5.9 cummins, nv4500 Last edited by 79GMC_OLDS; 03-12-2008 at 09:27 PM. Reason: typo

03-12-2008, 11:03 PM	#2
BowTieOgre Registered User Join Date: Mar 2006 Location: Pensacola, FL Posts: 1,461	Re: changing 2 speed to delay wipers Im not sure about the column swap but why dont you just buy an intermittent wiper switch/relay from the junkyard. It works great and plugs right in to the 2 spd. wiring plug. There is one on EBAY right now. __________________ 1986 C10 - LWB, 305/700r4, posi, vortec heads Last edited by BowTieOgre; 03-12-2008 at 11:06 PM.

03-13-2008, 12:09 AM	#4
BLE 'BURBAN In the Forgotten far North. Join Date: Jul 2007 Location: Anchorage, Alaska Posts: 2,627	Re: changing 2 speed to delay wipers I've got the switch and module on my 81 crew. I'll get pics of it tonight and post them on here so's you can see what the connections look like. If they are the same as your '7 model then they should work. Otherwise you'd have to do a slice-n-splice. __________________ 1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade

03-13-2008, 07:11 AM	#5
79GMC_OLDS Registered User Join Date: Feb 2006 Location: Ontario Posts: 145	Re: changing 2 speed to delay wipers ok awesome thanks...so if i wanted column mounted controls i could just wire the delay into the original wiper motor? in other words the motor has nothing to do with the delay __________________ 79 GMC Sierra 5.9 cummins, nv4500

03-13-2008, 05:22 PM	#8
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: changing 2 speed to delay wipers Actually...the 77 and down wiper motors are quite different from the 78-83 motors. I tried to put a 78-83 motor on a 77 and it wouldn't work. The connectors don't match up, and there aren't even enough wires. Same on the switch side, the 77 connector is incompatible with the 78-83 switch. In order to perform the swap, I had to remove all the wiring from the 78 and transfer it to the fuse box of the 77. Also had to enlarge the switch hole in the dash and drill new mounting holes. Last edited by Pyrotechnic; 03-13-2008 at 05:27 PM.

03-13-2008, 08:26 PM	#9
Tink Registered User Join Date: May 2002 Location: VA Posts: 1,337	Re: changing 2 speed to delay wipers This guy put delay wipers in his 75 Burban and has some great info: http://www.rowand.net/Shop/Tech/DelayWipers.htm __________________ 69 Chevy C10 88 Sierra 02 2500 Suburban And too many S10s to list!

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