Reworking Wire Harness after Engine Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CJ2A · 04-15-2020, 11:50 PM

1963 GMC with original 305 V6 swapped to an LS1.

All the wiring diagrams I have looked at show the black wire from the firewall plug on the passenger side as a hot wire directly from the starter. This black 18 gauge wire still has the original clip on end fitting. If this were on the starter it would of had an eye for the fitting, right ?

Am I over thinking this ?

Did GMC’s get there wiring harnesses thrown together with Chevy left overs so this color could be totally off and this is a temp gauge wire?

04-15-2020, 11:50 PM	#1
CJ2A Registered User Join Date: May 2019 Location: Hathaway Pines, CA Posts: 121	Reworking Wire Harness after Engine Swap 1963 GMC with original 305 V6 swapped to an LS1. All the wiring diagrams I have looked at show the black wire from the firewall plug on the passenger side as a hot wire directly from the starter. This black 18 gauge wire still has the original clip on end fitting. If this were on the starter it would of had an eye for the fitting, right ? Am I over thinking this ? Did GMC’s get there wiring harnesses thrown together with Chevy left overs so this color could be totally off and this is a temp gauge wire? Attached Images __________________ 48 CJ2A 63 1500 GMC (LS1 w/ Muncie 4spd) 68 RS Camaro 71 K20 BBC & granny 4 speed 95 2500 4x4 17 HD2500 4x4 Want => 67 C10 short bed w/ Manual Tranny

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