Wire & Cables EFI

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI powered...

Holley EFI Wiring Shop just keeps getting better! We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools, we have everything you need to build or service your Holley...

Introducing EFI Engine Connector Kits – From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our goal was to provide you with every engine connector used on the Holley EFI main harnesses. If you are building a custom engine...

Ford AODE/4R70W Transmission Harness

Dominator EFI GM Drive-By-Wire Harness

Dominator EFI Multi Map Selector

GM Tuned Port / Holley Steathram Engine Harness

Replacement I/O Adapter for Digital Dash

7' long sealed USB data cable. This cable is included with the purchase of an HP or Dominator ECU.

I/O Adapter w/Unterminated Vehicle Harness

This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98.