Standalone Harnesses by Ken Wolkens Modify any LS Series or Duramax Engine Wire Harness for use in your swap project. Any 1999 to 2013 LS Engine harness from LS1 LS2 LS3 LS6 LS7 LS9 LM7 L59 LY2 LR4 L20 LM4 L33 LY6 LH6 LMG LC9 LH8 LQ4 LQ9 L76 L96 LFA LZ1 L92 L94 L99 and LSA engines can be modified. I have over 100 references who will be happy to talk about the high quality work I have done on their Stand Alone Harnesses.Duramax · Contact Us · Customer Projects · Gen 5 Lt1 L86 L83 LS1/LS6 Stand Alone Engine Harness -Cable Throttle - CPW Harness was for LS1 with T56 and is absolute top notch! Can’t say enough good things about this harness. If you have some time with your build like I do, then I would definitely suggest getting a Stand-Alone Harness from these guys.