We designed our wiring harnesses to make your next engine swap effortless. Whether you're looking for a stress reliever, or the need to clean up your engine bay with less wires, Venum Racing wire harnesses has you covered! each new harness is made by hand one at a time. All harnesses are to OE spec so you won't need any adapters when connecting it to your LS engine. The harness comes with in-depth instructions to make your swap as simple and reliable as possible.
The first thing people notice when taking a closer at our wiring harnesses is the loom, and plugs. All of our work is made in-house with OEM Plugs, and high quality, and durable loom to ensure long lasting products. Harness wiring is tested on an in-house made stand and each plug is tested for voltage, and/or signal.
In addition to the premium build quality, our wiring harnesses come with 60 day money back guaranteed warranty that set it apart from the rest. OEM plug ensure perfect fitment each time you plug in, or remove a connector.
1991-2003 Vortec V8
- This harness is made with 4L60E connections included and is easily modified for 4L80E. Also has speed sensor wiring. ECM programming will need to match transmission style.
- Common aftermarket fuel pump relay is included. Fan relay is not included since the '99-'03 trucks had mechanical fans, however there are fan relay trigger wires included in the break out.
- These harnesses feature all of the connection points necessary to run the engine and transmission if applicable. The emission equipment has been eliminated and only the needed connections to run the engine and transmission are incorporated.
- ECM programming will need to be done to remove all of the unneeded trouble codes that may be active from the stock application. Programming will need to be done to remove VATS (vehicle anti-theft system) programming, otherwise the engine will not run. These wiring harnesses do not include any type of VATS module to defeat the theft system.
- Standard length harnesses are 54" from the back of the engine to the PCM connectors. Extended length harnesses add an extra 4 ft. to remote-mount the PCM in your glovebox or underneath your dash.
- ALERT : Allow 2 weeks for item to be produced and shipped.
- Pair it with our set of Billet Switches.
THIS PRODUCT IS LEGAL FOR OFF ROAD USE AND NON POLLUTION CONTROLLED VEHICLES (1965 & OLDER); HOWEVER, IT HAS NOT BEEN TESTED OR APPROVED BY THE CALIFORNIA AIR RESOURCES BOARD (CARB) FOR HIGHWAY VEHICLES IN THE STATE OF CALIFORNIA. BY PURCHASING THIS PRODUCT, BUYER AGREES IT WILL NOT BE USED ON POLLUTION CONTROLLED VEHICLES IN CALIFORNIA, OR IN A STATE WITH SIMILAR EMISSIONS REGULATIONS.