Holley- EFI TFI Ignition Harness

Main harness for Holley EFI  standalone.   Setup to use sensors on a modular engine.   Works with both Holley HP and Dominator.

For Dominator EFI System Dominator EFI Connector J2A Auxiliary Harness

For Holley Dominator EFI Auxillary Output Harness   Dominator EFI Connector J2B Auxiliary Harness

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness...

Injector harness for Holley EFI standalones. Injectors evenly spaced and setup for any modular engine. Works with EV1 style injectors (typically found in 1987-2004 Mustangs).