T56 DBW Engine Wiring Harness Stand Alone LS3 For 4.8 5.36.0 Drive By Wire 03-07

Stand Alone Engine Wiring Harness for LS3 DBW

This stand alone engine wiring harness is built for LS3 drive-by-wire swap builds and connects the engine management system to the throttle body, injectors, and sensors so the swap runs cleanly.

Overview

This stand alone harness is made for LS3 drive-by-wire conversion projects where a factory harness will not work. The engine wiring harness ties the PCM to the DBW throttle body, fuel injectors, coils, and sensors so the swap fires up and runs. It suits builders putting a 4.8, 5.3, or 6.0 into a project car or truck.

Built For Performance

• Stand alone layout removes the need to strip down a factory harness
• Drive-by-wire ready for DBW throttle body setups
• Tagged and color-coded circuits for simpler routing
• Built for LS-based 4.8, 5.3, and 6.0 engines
• Fused power and relay provisions for key-on circuits
• GM-style connectors for common LS sensors and injectors

Fits These Machines

• for LS3 drive-by-wire swap builds
• for 4.8L LS engine swaps
• for 5.3L LS engine swaps
• for 6.0L LS engine swaps
• for 2003 to 2007 drive-by-wire applications

On-The-Job Use

• Engine swap projects moving an LS into a classic car or truck
• Restomod builds needing a clean stand alone harness
• Off-road rigs running a carbureted-to-EFI conversion
• Shop builds wiring an LS on a run stand

Specs At A Glance

Good To Know

Q: Will this harness work with a cable throttle body? A: No, this harness is set up for drive-by-wire throttle bodies and requires a matching DBW pedal and PCM tuning.

Q: Do I need to modify it for a 4.8 or 5.3? A: The harness is built to cover the common LS variants, but pinout and sensor differences should be confirmed against your specific engine before install.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.