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Extensions are 24-inches long for use with Gen III LS and Vortec Engines 2003 - Up.  Genuine delphi and GM connectors are used.


  • Lab Rats Performance products may be returned under warranty by the original purchaser for up to one year from the date of purchase for defects in material and workmanship under normal use (excluding PCM/ECM’s). None of Lab Rats Performance products will be considered for warranty without a copy of the original purchase receipt showing the sellers name, address, and date of purchase. It will be the buyer who is returning the product responsibility to initiate the warranty process.  Lab Rats Performance has the right to charge a fee of 20% of the original product price for restocking purposes.  Also, the buyer will cover the price of shipping the item back to Lab Rats Performance.  


    Lab Rats Performance will honor returns that are 90 days from the buyers original purchase date minus a 20 percent restocking fee.  Lab Rats reserves the right to reject refunds from customers where harnesses have be modified.  Also, Lab Rats Performance reserves the right to reject a customers return if the harness has been cut or wires have been added in fashion.  Customers may return a incorrect harness in exchange for the correct harness that is needed for their application long as it is within 30 days of the original purchase.  Customer will pay for shipping, however a restocking fee will not apply.  


Lab Rats Peformance, LLC specializes in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In addition to wiring harnesses, you will find other components and kits for retrofitting older vehicles with these powertrains including PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!




PHONE: 504.603.0249

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