1Applicable Engine Models: The superior engine standalone wiring harness is extensively applicable to LS3 LS2 6.2L 6L80E 6L90E 58X Dbw 2006?2015 in Truck with perfect fitness. 2Convenient Installation: The engine standalone wiring harness is designed with a handful of labeled wires such as ignition, fuel pump and gauges for super simple chassis connections. 3Complete Wire Harness: Engine standalone wire harness comes with fully finished harness, that is engine and transmission connectors, such as for LS3 5 wire Maf, for LS3 Map Sensor, etc. 4Added Length: The engine stand alone wiring harness length and upgraded 60amp relays is professionally added, for easy computer mounting, run any size injector without issues. 5Excellent Conversion: The engine standalone wiring harness come with adapter connectors to convert harness from ev6 to ev1 or for delphi multi 4.8 5.3 or 6.0 injectors if needed.