Engine Wiring Harness Professional Standalone Wiring Harness with 4L60E Transmission Drive By Wire, with Wiring Guide Manual, Compatible with DBW LS3 Engines 4.8 5.3 6.0 2003 2004 2005 2006 2007 Item Description Note: This is gen3 blue green ecm connector. In order not to delay your time, please be sure to confirm whether it is suitable for you before buying. Green/ blue PCM connector fuel injector connectors. Such as compatible with Chevrolet, GMC, Cadillac and Hummer truck engines 2003 to 2007 Provided: engine and transmission wiring harness including all engine and transmission sensor connectors, dash connections, which include speedometer, tachometer, park neutral, malfunction indicator, -TCC and a DLC port, complete detailed instructions Replacement for drive by wire LS3 4L60E engine automatic transmission harness 2003 to 2007. 12-14 volts, suitable for 03 to 07 annual output automatic transmission gearbox, suitable for vortec 8 cylinders using 4L60E gearbox automotive, engine 4.8 5.3 6.0 A grommet is installed on the wiring harness, including wires, and the design of the sliding bellows sealing ring improves the durability of the wiring harness and allows professional leak proof installation Please check whether it is suitable for you before buying, we recommend professional installation ? See more product details *1. This harness is a 5 wire maf and 2 wire alternator. Replacement for drive by wire throttle body 2003 to 2007 dbw ls3 4.8 5.3 6.0 engines. All of our harnesses are built with oem. All harnesses are long enough (Added 18" for easy computer mounting). *2. Made of standard copper wire, good electrical conductivity. All wiring harnesses are equipped with good sleeves (slidable for the required installation) to improve the performance and efficiency of the engine. The wiring harness has undergone inspection before leaving the factory. Universal color code, good reinforced ring terminals, they are completely plug and play. The 1200-degree glass fiber braid on all circuits is heated, and all factory cpa (connector position). A complete set of engine and transmission wiring harnesses, including all engine and transmission sensor connectors. The wiring harness kit will suit your basic needs, with installation instructions, a standalone wiring process. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.