LS1 – LS6 Wire Harness and Tuning | LS Cable Throttle Systems 1999-2002

This LS1 wiring harness, LS6, LR4, LM7,LQ4, LSX wiring is based on the  General Motors 411 electronic control module (ECM). The SSW LS1 electrical wiring harness has full diagnostic capabilities, and a 4L60E controller. The Ls1 wiring harness consists of all connectors needed to run the application properly. We custom make all of these wiring systems in house, so if you would like additional length on a mass air flow sensor or injector trunk; due to a supercharger being installed, let us know.

  • Full read and write capabilities with HP Tuners and EFI Live tuning software.
  • Full diagnostic capabilities.
  • LS1 plug and play-ability .
  • LS1 emission wiring delete.
  • Integrated 4L60E transmission controller.
  • Power relay system, and integrated  harness fuse box.
  • Custom trunk length is available.

The LS1  or LS6  engine is a great choice for the first time fuel  injection installer.  If you have previous mechanical knowledge, connecting the nine wire LS1 power distribution block  will be painless. We make this LS1 wiring harness with a fully supported diagnostic link communication system, that allows you to re-tune the LS1 computer program. If you live is a state that requires the LS1 wiring system to have a real full emissions system, let us know and we can calculate that in your harness build. 


If your vehicle is non-emissions, you have many options when it comes to the LS1 computer program. We have programs available that allow you to run non-emissions and delete the rear heated oxygen sensors (HO2S) allowing the computer to calculate air to fuel ratio quickly. In open loop, the sensors used to control the engine are : The CTS sensor, TPS sensor , MAP sensor, MAFS and IAT sensor. The heated oxygen sensors only come into play when the computer goes into closed loop. When in closed loop , the computer has set parameters for all the tables, in conjunction with the HO2 sensors, the program basically runs as calibrated .