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

    TCI EZ-TCU Wiring Harness for '09+ 4L65/70E.

    TCI EZ-TCU Wiring Harness for '09+ 4L65/70E.

    $596.33

    Racepak Data Acquisition Component, Serial to USB Port, Each

    Racepak Data Acquisition Component, Serial to USB Port, Each

    $113.40

    Haltech Inputs and CAN Expansion, CAN Adaptors Hubs and Cables, Haltech CAN Cable 8 pin Black Tyco to 8 pin Black Tyco Length: 2400mm (92"), Each

    Haltech Inputs and CAN Expansion, CAN Adaptors Hubs and Cables, Haltech CAN Cable 8 pin Black Tyco to 8 pin Black Tyco Length: 2400mm (92"), Each

    $75.00

    FAST Motorcycle Length A/F Meter Harness w/ Power Lead

    FAST Motorcycle Length A/F Meter Harness w/ Power Lead

    $166.98

    Haltech Wiring Harnesses, Elite ECU Universal Harnesses, Elite 750 Premium Universal Wire-in Harness Length: 2.5m (8'), Kit

    Haltech Wiring Harnesses, Elite ECU Universal Harnesses, Elite 750 Premium Universal Wire-in Harness Length: 2.5m (8'), Kit

    $525.00