Holley - Ignition Harnesses

Item #558-303
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Holley - Ignition Harnesses for your Avenger, HP, or Dominator EFI Systems

These Holley Ignition harnesses is designed for use with your Holly Avenger, HP, or Dominator EFI System. These wiring harnesses work with other Holley components to properly configure your EFI system. Holley offers different harnesses to fit your application whether you have Magnetic Pickup, HEI, TFI, or an LS, We have the harness for you.

  • 558 - 303: Magnetic Pickup Ign Harness, used to connect to a magnetic pickup distributor or crank trigger. Customer must supply sensor connectors/pins.
  • 558 - 304: HEI Ign Harness, Connects to small cap computer controlled GM HEI
  • 558 - 305: Ford TFI Ign Harness
  • 558 - 306: Universal Unterminated Ign Harness: Semi-terminated. Includes all wiring to hook up to any crank and cam sensor. Shield/Ground Cable used. Customer must supply crank/cam pins and connectors for their specific sensor and may have to crimp metripak pins.
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