Wiring Harnesses

This harness gives you the pre-built harness needed to allow the XFI to control your electric fuel pump and electric fan. Just provide the relays and fuses and let the XFI do the rest.CatalogUser 1

This harness allows you to connect a vehicle speed sensor or a driveshaft speed sensor to your XFI computer.CatalogUser 1

Connect multiple Nitrous solenoids and take full control over your power adders with the XFI ECU using this kit.CatalogUser 1

FAST's Thick Film Ignition Adapter kit contains the harness needed to adapt to a Ford TFI ignition device.CatalogUser 1

These adapters allow a common ECU and main harness to adapt to a wide variety of ignition strategies.CatalogUser 1This Part Fits:YearMakeModelSubmodel1994-1995BuickRoadmasterBase1996BuickRoadmasterCollector's Edition1994-1995BuickRoadmasterEstate...

This HEI Ignition Adapter kit contains the harness needed to adapt the XFI 2.0 to an HEI Ignition device.CatalogUser 1

FAST's Hall Effect Adapter kit contains the harness needed to adapt the XFI 2.0 to a 3-wire Hall Effect ignition device.CatalogUser 1

FAST's IPU Adapter kit contains the harness needed to adapt to an Inductive Pickup (IPU)/Magnetic ignition device such as a crank trigger or IPU 2 Wire distributor.CatalogUser 1

FAST XFI Fuel Injector Harnesses connect the XFI ECU to the fuel injectors. These harnesses are designed to aC-Commodate most common V8 engines from the Chevrolet Small Block to GM LS Series, Ford Small and Big Blocks as well as Windsor, Modular, FE...

FAST XFI Fuel Injector Harnesses connect the XFI ECU to the fuel injectors. These harnesses are designed to aC-Commodate most common V8 engines from the Chevrolet Small Block to GM LS Series, Ford Small and Big Blocks as well as Windsor, Modular, FE...

FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also...

FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also...