This harness is standalone and is not intended to replace the OEM engine wiring.
Standalone harnesses are intended to run the designated engine and transmission only, generally when swapped into another vehicle.
Designed for the 1998-2002 LS1 mechanical throttle body engines, this harness uses a 1999+ LS1 / LS6 ECM with a 4L60E/4L65E/4L80E automatic or T56 manual transmission.
Found in 1998-2002 Camaro/Firebird, this harness will also work on 1997-2004 Throttle By Wire (TBW) LS1/LS6 engines that have been changed to mechanical throttle body or any 1999-2006 (4.8, 5.3, & 6.2) Vortec truck engine that has been changed to a factory or aftermarket LS1 intake manifold, mechanical throttle body, and injectors.
Harnesses do not include any emissions-related connections but are available separately.
Included with this harness is an 8-circuit modular fuse block and GM color-coded wires with labels for easy installation.
This extended length harness allows eight feet from the back of the intake manifold to where the fuse block and ECM mount.
Perfect for those planning to mount these components under the seat or in the center console.
We recommend checking the online manual for the full list of required mating parts prior to ordering.
