Engine Wiring Harnesses for 1967–1972 GM Trucks
Get your engine bay wired cleanly and correctly with engine wiring harnesses built for 67-72 GM trucks. Whether you're running a stock small block, a big block, or doing an LS swap, we have the right harness to make your C10 or K10 build clean and reliable.
- Engine wiring harnesses for 67-72 GM trucks
- Compatible with SBC, BBC, and LS engine swaps
- Correct connector configurations for C10 and K10 applications
- Trusted brands with proven fitment for classic GM builds
A clean engine bay starts with a clean harness — get the right engine wiring for your classic GM truck.
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Wire Harness MPFI to SS MAP Adapter
The Wire Harness MPFI to SS MAP Adapter is designed...
$44.95
Vendor
ECU & Wire Harness Unterminated
The ECU & Wire Harness Unterminated is a universal solution...
$2,611.95
Vendor
Input/Output Can Module w/Harness
The Input/Output Can Module with Harness is designed for Holley...
$501.95
Vendor
ECU & Wiring Harness LS2
The ECU & Wiring Harness LS2 is designed for LS2/LS3/LS7...
$2,721.95
Vendor
Terminator X ECU Service Unit
The Terminator X ECU Service Unit is designed to provide...
$872.95
Vendor
ECU & Harness Kit - GM TPI/Holley Stealth Ram
The ECU & Harness Kit for GM TPI/Holley Stealth Ram...
$2,611.95
Vendor
Adapter Harness Wideband Terminator-X
The Adapter Harness Wideband Terminator-X from Holley EFI is designed...
$65.95
Vendor
Trans Wire Harness GM 4L60 Pre 2009 - 4L80
The Trans Wire Harness GM 4L60 Pre 2009 - 4L80...
$308.95
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