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Stand Alone Chevy LS Engines & Engine Wire Harnesses

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LSx Harness Info & Pictures




These are a few Pictures of our "Reworked" GM Harnesses. Reworked meaning, we've made them "Stand Alone" units. They will work with as few as 3 Wires Hooked up! We DO NOT make harnesses... we leave that to GM. Our Business here at LSx4U is to make Stand Alone LS Harnesses & ECM for use in Off Road Vehicles or application that DOES NOT need to pass State or Federal Emissions test. If your transplanting an LS Engine into an older vehicle you have a shot at passing the emissions test set up for that year vehicle!

Click Here For Our Easy LSx Harness Installation Instructions


Stand Alone Reprogrammed ECM / PCM
The No Trans Control Engine Harness Needs Only 3 Wires To Run... Talk About EASY!


Below Is the "Express" harness with the longer main trunk so that the ECM can be mounted inside the vehicle!


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LSx Engine Swaps Made Easy!