Wiring & Plugs

PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must be...

MULTEC 2 INJECTOR HARNESS - EARLY TRUCK

Expanding on our Transmission Control options from Holley EFI. This new harness 558-455 from Holley EFI provides plug and play transmission control for the 2009+ GM 4L60 when used with a Dominator ECU. The 2009+ GM 4L60E contains an internal turbine...

570-316 Holley EFI GM Manifold Air Temperature Sensor Connector

j2A, j2B, j3, j4 Connector & Pin Kit - Contains connectors & pins, but no wiring. for Dominator EFI

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...

GM 4L60/80E Transmission Harness - Complete terminated harness with j4 connector to operate GM electronic transmissions. for Dominator EFI

Chrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different visually and makes for a simple review. If the coil...

Dominator EFI GM DBW Harness-Early Truck