The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Question on under-dash harnesses

kipps · 06-03-2020, 06:41 PM

Another thing. I'm reasonably certain that the R/V trucks kept the dash harness and the TBI harness separate, with only one or two plugs connecting the two.

The dash harness would have remained similar to the previous squarebody C/K trucks, with a few additions, such as the ALDL port and the check engine light.

If your problem is with one harness only, there's probably no reason to replace both.

06-03-2020, 06:41 PM	#4
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,099	Re: Question on under-dash harnesses Another thing. I'm reasonably certain that the R/V trucks kept the dash harness and the TBI harness separate, with only one or two plugs connecting the two. The dash harness would have remained similar to the previous squarebody C/K trucks, with a few additions, such as the ALDL port and the check engine light. If your problem is with one harness only, there's probably no reason to replace both. __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!