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Greenlee · 06-19-2017, 10:09 PM

Nice truck! I have almost the same truck (83' k10 with TBI).

You are correct about that plug. There is a harness that plugs into it and goes under the dash to the drivers side. I can't remember specifically if it goes to the cluster, but that sounds right. It's been a few years since I wired mine. I used a complete wire harness from a 89' Suburban.

There is just one fuel pump relay for dual tanks. The trucks you see with two relays have a th400. The extra relay is for the kick down.

06-19-2017, 10:09 PM	#2
Greenlee Registered User Join Date: Jun 2004 Location: El Lago, TX Posts: 1,668	Re: 83 K10 Survivor Project Nice truck! I have almost the same truck (83' k10 with TBI). You are correct about that plug. There is a harness that plugs into it and goes under the dash to the drivers side. I can't remember specifically if it goes to the cluster, but that sounds right. It's been a few years since I wired mine. I used a complete wire harness from a 89' Suburban. There is just one fuel pump relay for dual tanks. The trucks you see with two relays have a th400. The extra relay is for the kick down.