Wire Routing for Courtesy Light Switch - 72 Blazer - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Green Monster · 10-13-2007, 08:30 AM

I was recently lurking under my dash and I found evidence indicating the courtesy lights on my 72 Blazer were added on by a previous owner. I'm under the impression that this was a factory option with some trucks, Blazers, and Suburbans.

The wiring appears to have been routed incorrectly. The wires in the cabin go to the switch at the "A" pillar from under the dash. The problem is that the wires were ran through the kick panel vent door openings. This method looks to be the fastest and easiest route to the switch. It is not clean looking and puts the wires at risk of damage. I would like to correct this. When installed properly, what is the correct routing for the courtesy lights to the switch at the door?

-John

tucsonbroker · 10-13-2007, 10:17 AM

In mine, which I think is the factory install, passes through a rubber grommet right above the vent lever. I'm not sure how you can pass the wire through there without taking a lot apart.

vtblazer · 10-13-2007, 01:56 PM

^ correct.

The end of the wire should come apart from the switch.

Pull the wire through, make up to the switch and install the switch into the door pillar.

Green Monster · 10-13-2007, 09:13 PM

Excellent picture. Thanks guys. Who would carry rubber grommets for something like this locally?

ABLAZN · 10-13-2007, 09:34 PM

Quote:

Originally Posted by Green Monster

Excellent picture. Thanks guys. Who would carry rubber grommets for something like this locally?

NAPA should have them. If not they should be able to order them for you.

tucsonbroker · 10-13-2007, 10:35 PM

Ace hardware has tons of grommets like those in their specialty part area near the bolt section.

10-13-2007, 08:30 AM	#1
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Wire Routing for Courtesy Light Switch - 72 Blazer I was recently lurking under my dash and I found evidence indicating the courtesy lights on my 72 Blazer were added on by a previous owner. I'm under the impression that this was a factory option with some trucks, Blazers, and Suburbans. The wiring appears to have been routed incorrectly. The wires in the cabin go to the switch at the "A" pillar from under the dash. The problem is that the wires were ran through the kick panel vent door openings. This method looks to be the fastest and easiest route to the switch. It is not clean looking and puts the wires at risk of damage. I would like to correct this. When installed properly, what is the correct routing for the courtesy lights to the switch at the door? -John __________________ Photo Gallery of 1972 K/5 Blazer CST Last edited by Green Monster; 10-13-2007 at 08:31 AM.

10-13-2007, 10:17 AM	#2
tucsonbroker Ready for off-road Join Date: Sep 2007 Location: Tucson, AZ Posts: 62	Re: Wire Routing for Courtesy Light Switch - 72 Blazer In mine, which I think is the factory install, passes through a rubber grommet right above the vent lever. I'm not sure how you can pass the wire through there without taking a lot apart. Attached Images

10-13-2007, 01:56 PM	#3
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Re: Wire Routing for Courtesy Light Switch - 72 Blazer ^ correct. The end of the wire should come apart from the switch. Pull the wire through, make up to the switch and install the switch into the door pillar.

10-13-2007, 09:13 PM	#4
Green Monster Registered User Join Date: Mar 2006 Location: Malvern, PA Posts: 951	Re: Wire Routing for Courtesy Light Switch - 72 Blazer Excellent picture. Thanks guys. Who would carry rubber grommets for something like this locally? __________________ Photo Gallery of 1972 K/5 Blazer CST

10-13-2007, 10:35 PM	#6
tucsonbroker Ready for off-road Join Date: Sep 2007 Location: Tucson, AZ Posts: 62	Re: Wire Routing for Courtesy Light Switch - 72 Blazer Ace hardware has tons of grommets like those in their specialty part area near the bolt section.



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