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 comes complete with the main harness, power harness and injector harness to support your primary system!
GM TPI and Stealth Ram EFI HARNESS KITPart #: 558-503
- Length: 14"
- Width: 15"
- Height: 5"
- Emissions Code: 4
- Prop 65: No
- Harness Kit Includes: Stealthram/TPI Main Harness, Main Power Harness, V-8 Injector Harness, HEI Ign Harness and Ignition Adapter & Tach Input
- Simple Installation
- Works with HP or Dominator ECU's