Upgrade your EFI system with the Holley Ignition Wire Harness, designed for seamless integration with Holley Terminator X, HP, or Dominator EFI systems. Effortless Installation: This replacement input and output harness simplifies your wiring process, ensuring a hassle-free setup. Versatile Compatibility: Specifically crafted for Holley EFI systems, this harness is ideal for both speed density (Map-N) and speed throttle (Alpha-N) metering styles. Enhanced Performance: Optimized for multi-port fuel injection, this harness supports improved fuel management for your vehicle. Quality You Can Trust: Holley is a renowned name in the automotive industry, ensuring reliability and durability in all their products. The Holley Ignition Wire Harness (part number 558400) is sold individually and is part of the Holley J1A/B Dominator Auxiliary Wiring Harnesses line, making it a perfect fit for your performance needs.Choose Holley for quality wiring solutions that enhance your vehicle's performance.
