1985 GMC Cruise Wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

otterby · 08-02-2011, 10:55 PM

I recently purchased an '85 GMC Sierra Classic 3500. The cruise servo diaphram had been removed because it was bad but the owner gave me a good one along with the truck. The servo has a spot for a flat 5 prong plug to connect it. At the firewall approx where the servo goes is only a small square plug with six holes, five of which have contacts in them. Is there an adaptor plug to go between this plug and the servo or am I looking at the wrong plug all together?

08-02-2011, 10:55 PM	#1
otterby Registered User Join Date: Aug 2011 Location: Casper, WY Posts: 20	1985 GMC Cruise Wiring I recently purchased an '85 GMC Sierra Classic 3500. The cruise servo diaphram had been removed because it was bad but the owner gave me a good one along with the truck. The servo has a spot for a flat 5 prong plug to connect it. At the firewall approx where the servo goes is only a small square plug with six holes, five of which have contacts in them. Is there an adaptor plug to go between this plug and the servo or am I looking at the wrong plug all together?



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