Re: Doing TBI swap to 69 GMC
If you carefully remove the 87 harness and mark every connector, you should be able to reuse it. It's nearly a stand alone harness already. I located the ECM on the side of my heater box inside the truck, and the wires were the right length.
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Gary
1971 Chevrolet C/10
1951 GMC 100
1977 GMC C15
1955 Chevrolet 3100
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