Auxiliary Harness







Ignition Harness






Holley Universal Coil On Plug Harness Use With Holley HP or Dominator ECUs


Universal Coil On Plug Harness
  • Use With Holley HP or Dominator ECUs
  • Connects 510-558-312 or Factory GM LSx Coil Harnesses
  • $102.95
    Estimated to ship directly from the manufacturer on 04/30/18
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    Injector Harness









    Holley Fuel Injection Wire Harness Kit CAN2 Connectors


    Fuel Injection Wire Harness Kit
  • CAN2 Connectors
  • Auxiliary Harness For Use With Racepak And Other External CAN Drives
  • $67.05
    Ships Today
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    Main Harness









    Holley Universal MPFI Coil-on-Plug Main Harness


    Universal MPFI Coil-on-Plug Main Harness
  • Easily allows Coil-on-Plug Conversion
  • Dual CANbus Connectors for Multiple CAN Devices
  • Pre-Installed Power Tap
  • 20awq Gauge Wire
  • $359.95
    Ships in 24hrs directly from the manufacturer
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