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 handles communication between the ECU and ignition devices. Main harnesses are available in TPI, LT-1, LS-1 through 9 (including truck/suv designs), Modern Hemi, Carburetor Conversions and even Rear-Engine Dragsters and Boats. FAST also offers Main Harnesses that come terminated on the sensor side but non-terminated on the ECU side to allow for a truely custom fit. All terminals, seals and connectors are available individually, so don't hesitate to try your hand at crafting your own custom harness from start to finish.

This Part Fits:

Year	Make	Model	Submodel
2004-2007	Cadillac	CTS	V
2002-2005	Chevrolet	Avalanche 1500	Base
2005-2006	Chevrolet	Avalanche 1500	LS
2005-2006	Chevrolet	Avalanche 1500	LT
2004-2006	Chevrolet	Avalanche 1500	Z66
2002-2006	Chevrolet	Avalanche 1500	Z71
2014-2015	Chevrolet	Camaro	Z/28
1998-2002	Chevrolet	Camaro	Z28
1998-2002	Chevrolet	Camaro	Z28 SS
2013	Chevrolet	Corvette	427
2003	Chevrolet	Corvette	50th Anniversary Edition
2003	Chevrolet	Corvette	50th Anniversary Edition Pace Car
1997-2007	Chevrolet	Corvette	Base
1998	Chevrolet	Corvette	Indianapolis 500 Pace Car
2001-2004,2006-2013	Chevrolet	Corvette	Z06
2011	Chevrolet	Corvette	Z06 Carbon
2003-2007	Chevrolet	Express 1500	Base
2003-2007	Chevrolet	Express 1500	LS
2006-2007	Chevrolet	Express 1500	LT
2003-2007	Chevrolet	Express 2500	Base
2003-2006	Chevrolet	Express 2500	LS
2006	Chevrolet	Express 2500	LT
2003-2005	Chevrolet	Express 3500	Base
1999-2005	Chevrolet	Silverado 1500	Base
1999-2006	Chevrolet	Silverado 1500	LS
1999-2007	Chevrolet	Silverado 1500	LT
2007	Chevrolet	Silverado 1500	LTZ
2002-2004,2006-2007	Chevrolet	Silverado 1500	WT
2004	Chevrolet	Silverado 1500	Z71 Off-Road
2007	Chevrolet	Silverado 1500 Classic	LS
2007	Chevrolet	Silverado 1500 Classic	LT
2007	Chevrolet	Silverado 1500 Classic	WT
1999-2004	Chevrolet	Silverado 2500	Base
1999-2000	Chevrolet	Silverado 2500	LS
1999-2000	Chevrolet	Silverado 2500	LT
2004-2005	Chevrolet	Silverado 3500	Base
2003-2006	Chevrolet	SSR	Base
2000-2001,2006	Chevrolet	Suburban 1500	Base
2000-2006	Chevrolet	Suburban 1500	LS
2000-2006	Chevrolet	Suburban 1500	LT
2004-2006	Chevrolet	Suburban 1500	Z71
2000-2001,2006	Chevrolet	Tahoe	Base
2000-2006	Chevrolet	Tahoe	LS
2000-2006	Chevrolet	Tahoe	LT
2003-2006	Chevrolet	Tahoe	Z71
2006-2009	Chevrolet	Trailblazer	SS
2003-2004	Chevrolet	Trailblazer EXT	LS
2003-2004	Chevrolet	Trailblazer EXT	LT
2003-2004	Chevrolet	Trailblazer EXT	North Face
2004	GMC	Envoy XL	SLE
2004	GMC	Envoy XL	SLT
2003-2006	GMC	Savana 1500	Base
2006	GMC	Savana 1500	LS
2006	GMC	Savana 1500	LT
2003-2005	GMC	Savana 1500	SLE
2003-2007	GMC	Savana 2500	Base
2003-2005	GMC	Savana 2500	SLE
2004-2007	GMC	Savana 3500	Base
2005	GMC	Savana 3500	SLE
2002-2005	GMC	Sierra 1500	Base
2002	GMC	Sierra 1500	HT
1999-2003,2006	GMC	Sierra 1500	SL
1999-2007	GMC	Sierra 1500	SLE
1999-2006	GMC	Sierra 1500	SLT
2002-2007	GMC	Sierra 1500	WT
2007	GMC	Sierra 1500 Classic	SL
2007	GMC	Sierra 1500 Classic	SLE
2007	GMC	Sierra 1500 Classic	WT
1999-2001	GMC	Sierra 2500	SL
1999-2001	GMC	Sierra 2500	SLE
1999-2001	GMC	Sierra 2500	SLT
2001	GMC	Sierra 2500 HD	SL
2001	GMC	Sierra 2500 HD	SLE
2001	GMC	Sierra 2500 HD	SLT
2001	GMC	Sierra 3500	SL
2001	GMC	Sierra 3500	SLE
2001	GMC	Sierra 3500	SLT
2006	GMC	Yukon	SL
2000-2006	GMC	Yukon	SLE
2000-2006	GMC	Yukon	SLT
2006	GMC	Yukon XL 1500	SL
2000-2006	GMC	Yukon XL 1500	SLE
2000-2006	GMC	Yukon XL 1500	SLT
2000-2001	GMC	Yukon XL 2500	SLT
2003-2007	Hummer	H2	Base
1998-2002	Pontiac	Firebird	Formula
1998-2002	Pontiac	Firebird	Trans Am
2004-2006	Pontiac	GTO	Base