LS1 ENGINE HARNESS MODIFICATION

GM Wire Harness Modification | GM LS Mod | LS1 Mod
GM Wiring Modification of LS and LT Wiring Systems You must have the harness off of the donor LT1, TPI, LS1 engine, undamaged. We re-configure and tail out what needs to be used, to run the engine and transmission correctly, at full power. This is a very complete service we offer, the wire harness
Modification of stock Engine harness (LTx, LSx, Gen 3, 4
Modification of Stock Engine Harness. If you’ve acquired an LT1, LSx Gen 3 or 4, or Gen 5 (LT1, L83, L86) style engine that came with a wiring harness on it, and you feel that the length of the harness to the ECU, and the look of the harness will work fine for your project, then we can simply modify it to be a stand alone engine management harness.