Including results for 1 wiring ls harness modified.Do you want results only for 1 wiring ls harness modifiie? Wiring Harness Information - LT1 Swap Here is some information for LT1, LS1, Vortec 4.8, 5.3, 6.0 wiring harnesses. There should be enough here to get you going in the right direction. Some of these I have pictures of completed harnesses I have modified for easy installation. I have a lot of pictures so please be patient and let them load.2007-2009 Vortec Harness · Vortec 8 Info · GM ECM Tuning LS SWAPS: Wiring Harness and Wiring Guide - LS Engine DIY Mar 10, 2015LS SWAPS: Wiring Harness and Wiring Guide Includes in-depth instruction and photos. Covers all the criteria to consider when starting an LS swap project it can be modified to greatly simplify the process of wiring the engine. The majority of the wires in the stock harness are not needed in a retrofit application. V-8 LS Engine LS SWAPSAuthor: LS Engine DiyIncluding results for 1 wiring ls harness modified.Do you want results only for 1 wiring ls harness modifiie?