An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit for your GM LS engine comes complete with the main harness, power harness and injector harness to support your primary system!

Features:
  • Harness Kit Includes; Main Power Harness, LS1 Main Harness & V-8 Injector harness
  • Simple Installation
  • Works with HP or Dominator ECU's
  • More From This Category

    MSD Wiring Harness, Replacement, Digital-7, Each

    MSD Wiring Harness, Replacement, Digital-7, Each

    $149.54

    View
    Scott Drake Classic Body Wiring Harness, 1968 GT Underdash Harness With Tach, Kit

    Scott Drake Classic Body Wiring Harness, 1968 GT Underdash Harness With Tach, Kit

    $1,614.96

    View
    Holley EFI Fuel Injection Wire Harness, Multi-Port, Mass Airflow, Each

    Holley EFI Fuel Injection Wire Harness, Multi-Port, Mass Airflow, Each

    $427.04

    View
    MSD Harness, LS-Input, Can, Replacement, 8000

    MSD Harness, LS-Input, Can, Replacement, 8000

    $131.27

    View
    Haltech Inputs and CAN Expansion Products, CAN Adaptors Hubs and Cables, Haltech Elite CAN Cable DTM-4 to DTM-4 Length: 900mm (36"), Each

    Haltech Inputs and CAN Expansion Products, CAN Adaptors Hubs and Cables, Haltech Elite CAN Cable DTM-4 to DTM-4 Length: 900mm (36"), Each

    $75.00

    View
    Haltech Inputs and CAN Expansion Products, CAN Adaptors Hubs and Cables, Haltech Elite CAN Cable DTM-4 to 8 pin Black Tyco Length: 300mm (12"), Each

    Haltech Inputs and CAN Expansion Products, CAN Adaptors Hubs and Cables, Haltech Elite CAN Cable DTM-4 to 8 pin Black Tyco Length: 300mm (12"), Each

    $59.00

    View