FAST Wiring Harness Main LS1LS2L

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 XFI Main Harness is designed to connect engines that feature GM LS style sensors to our XFI ECU.
Works well out of the box with GM LS1,LS2,LS3,LS6,LS7,LS9 along with GM LS Based Pickup Truck and SUV applications.

Fitment:
Cadillac CTS V 2004
Cadillac CTS V 2005
Cadillac CTS V 2006
Cadillac CTS V 2007
Chevrolet Avalanche 1500 Base 2002
Chevrolet Avalanche 1500 Base 2003
Chevrolet Avalanche 1500 Base 2004
Chevrolet Avalanche 1500 Base 2005
Chevrolet Avalanche 1500 LS 2005
Chevrolet Avalanche 1500 LS 2006
Chevrolet Avalanche 1500 LT 2005
Chevrolet Avalanche 1500 LT 2006
Chevrolet Avalanche 1500 Z66 2004
Chevrolet Avalanche 1500 Z66 2005
Chevrolet Avalanche 1500 Z66 2006
Chevrolet Avalanche 1500 Z71 2002
Chevrolet Avalanche 1500 Z71 2003
Chevrolet Avalanche 1500 Z71 2004
Chevrolet Avalanche 1500 Z71 2005
Chevrolet Avalanche 1500 Z71 2006
Chevrolet Camaro Z/28 2014
Chevrolet Camaro Z/28 2015
Chevrolet Camaro Z28 1998
Chevrolet Camaro Z28 1999
Chevrolet Camaro Z28 2000
Chevrolet Camaro Z28 2001
Chevrolet Camaro Z28 2002
Chevrolet Camaro Z28 SS 1998
Chevrolet Camaro Z28 SS 1999
Chevrolet Camaro Z28 SS 2000
Chevrolet Camaro Z28 SS 2001
Chevrolet Camaro Z28 SS 2002
Chevrolet Corvette 427 2013
Chevrolet Corvette 50th Anniversary Edition 2003
Chevrolet Corvette 50th Anniversary Edition Pace Car 2003
Chevrolet Corvette Base 1997
Chevrolet Corvette Base 1998
Chevrolet Corvette Base 1999
Chevrolet Corvette Base 2000
Chevrolet Corvette Base 2001
Chevrolet Corvette Base 2002
Chevrolet Corvette Base 2003
Chevrolet Corvette Base 2004
Chevrolet Corvette Base 2005
Chevrolet Corvette Base 2006
Chevrolet Corvette Base 2007
Chevrolet Corvette Indianapolis 500 Pace Car 1998
Chevrolet Corvette Z06 2001
Chevrolet Corvette Z06 2002
Chevrolet Corvette Z06 2003
Chevrolet Corvette Z06 2004
Chevrolet Corvette Z06 2006
Chevrolet Corvette Z06 2007
Chevrolet Corvette Z06 2008
Chevrolet Corvette Z06 2009
Chevrolet Corvette Z06 2010
Chevrolet Corvette Z06 2011
Chevrolet Corvette Z06 2012
Chevrolet Corvette Z06 2013
Chevrolet Corvette Z06 Carbon 2011
Chevrolet Express 1500 Base 2003
Chevrolet Express 1500 Base 2004
Chevrolet Express 1500 Base 2005
Chevrolet Express 1500 Base 2006
Chevrolet Express 1500 Base 2007
Chevrolet Express 1500 LS 2003
Chevrolet Express 1500 LS 2004
Chevrolet Express 1500 LS 2005
Chevrolet Express 1500 LS 2006
Chevrolet Express 1500 LS 2007
Chevrolet Express 1500 LT 2006
Chevrolet Express 1500 LT 2007
Chevrolet Express 2500 Base 2003
Chevrolet Express 2500 Base 2004
Chevrolet Express 2500 Base 2005
Chevrolet Express 2500 Base 2006
Chevrolet Express 2500 Base 2007
Chevrolet Express 2500 LS 2003
Chevrolet Express 2500 LS 2004
Chevrolet Express 2500 LS 2005
Chevrolet Express 2500 LS 2006
Chevrolet Express 2500 LT 2006
Chevrolet Express 3500 Base 2003
Chevrolet Express 3500 Base 2004
Chevrolet Express 3500 Base 2005
Chevrolet Silverado 1500 Base 1999
Chevrolet Silverado 1500 Base 2000
Chevrolet Silverado 1500 Base 2001
Chevrolet Silverado 1500 Base 2002
Chevrolet Silverado 1500 Base 2003
Chevrolet Silverado 1500 Base 2004
Chevrolet Silverado 1500 Base 2005
Chevrolet Silverado 1500 LS 1999
Chevrolet Silverado 1500 LS 2000
Chevrolet Silverado 1500 LS 2001
Chevrolet Silverado 1500 LS 2002
Chevrolet Silverado 1500 LS 2003
Chevrolet Silverado 1500 LS 2004
Chevrolet Silverado 1500 LS 2005
Chevrolet Silverado 1500 LS 2006
Chevrolet Silverado 1500 LT 1999
Chevrolet Silverado 1500 LT 2000
Chevrolet Silverado 1500 LT 2001
Chevrolet Silverado 1500 LT 2002
Chevrolet Silverado 1500 LT 2003
Chevrolet Silverado 1500 LT 2004
Chevrolet Silverado 1500 LT 2005
Chevrolet Silverado 1500 LT 2006
Chevrolet Silverado 1500 LT 2007
Chevrolet Silverado 1500 LTZ 2007
Chevrolet Silverado 1500 WT 2002
Chevrolet Silverado 1500 WT 2003
Chevrolet Silverado 1500 WT 2004
Chevrolet Silverado 1500 WT 2006
Chevrolet Silverado 1500 WT 2007
Chevrolet Silverado 1500 Z71 2004
Chevrolet Silverado 1500 Classic LS 2007
Chevrolet Silverado 1500 Classic LT 2007
Chevrolet Silverado 1500 Classic WT 2007
Chevrolet Silverado 2500 Base 1999
Chevrolet Silverado 2500 Base 2000
Chevrolet Silverado 2500 Base 2001
Chevrolet Silverado 2500 Base 2002
Chevrolet Silverado 2500 Base 2003
Chevrolet Silverado 2500 Base 2004
Chevrolet Silverado 2500 LS 1999
Chevrolet Silverado 2500 LS 2000
Chevrolet Silverado 2500 LT 1999
Chevrolet Silverado 2500 LT 2000
Chevrolet Silverado 3500 Base 2004
Chevrolet Silverado 3500 Base 2005
Chevrolet SSR Base 2003
Chevrolet SSR Base 2004
Chevrolet SSR Base 2005
Chevrolet SSR Base 2006
Chevrolet Suburban 1500 Base 2000
Chevrolet Suburban 1500 Base 2001
Chevrolet Suburban 1500 Base 2006
Chevrolet Suburban 1500 LS 2000
Chevrolet Suburban 1500 LS 2001
Chevrolet Suburban 1500 LS 2002
Chevrolet Suburban 1500 LS 2003
Chevrolet Suburban 1500 LS 2004
Chevrolet Suburban 1500 LS 2005
Chevrolet Suburban 1500 LS 2006
Chevrolet Suburban 1500 LT 2000
Chevrolet Suburban 1500 LT 2001
Chevrolet Suburban 1500 LT 2002
Chevrolet Suburban 1500 LT 2003
Chevrolet Suburban 1500 LT 2004
Chevrolet Suburban 1500 LT 2005
Chevrolet Suburban 1500 LT 2006
Chevrolet Suburban 1500 Z71 2004
Chevrolet Suburban 1500 Z71 2005
Chevrolet Suburban 1500 Z71 2006
Chevrolet Tahoe Base 2000
Chevrolet Tahoe Base 2001
Chevrolet Tahoe Base 2006
Chevrolet Tahoe LS 2000
Chevrolet Tahoe LS 2001
Chevrolet Tahoe LS 2002
Chevrolet Tahoe LS 2003
Chevrolet Tahoe LS 2004
Chevrolet Tahoe LS 2005
Chevrolet Tahoe LS 2006
Chevrolet Tahoe LT 2000
Chevrolet Tahoe LT 2001
Chevrolet Tahoe LT 2002
Chevrolet Tahoe LT 2003
Chevrolet Tahoe LT 2004
Chevrolet Tahoe LT 2005
Chevrolet Tahoe LT 2006
Chevrolet Tahoe Z71 2003
Chevrolet Tahoe Z71 2004
Chevrolet Tahoe Z71 2005
Chevrolet Tahoe Z71 2006
Chevrolet Trailblazer SS 2006
Chevrolet Trailblazer SS 2007
Chevrolet Trailblazer SS 2008
Chevrolet Trailblazer SS 2009
Chevrolet Trailblazer EXT LS 2003
Chevrolet Trailblazer EXT LS 2004
Chevrolet Trailblazer EXT LT 2003
Chevrolet Trailblazer EXT LT 2004
Chevrolet Trailblazer EXT North Face 2003
Chevrolet Trailblazer EXT North Face 2004
GMC Envoy XL SLE 2004
GMC Envoy XL SLT 2004
GMC Savana 1500 Base 2003
GMC Savana 1500 Base 2004
GMC Savana 1500 Base 2005
GMC Savana 1500 Base 2006
GMC Savana 1500 LS 2006
GMC Savana 1500 LT 2006
GMC Savana 1500 SLE 2003
GMC Savana 1500 SLE 2004
GMC Savana 1500 SLE 2005
GMC Savana 2500 Base 2003
GMC Savana 2500 Base 2004
GMC Savana 2500 Base 2005
GMC Savana 2500 Base 2006
GMC Savana 2500 Base 2007
GMC Savana 2500 SLE 2003
GMC Savana 2500 SLE 2004
GMC Savana 2500 SLE 2005
GMC Savana 3500 Base 2004
GMC Savana 3500 Base 2005
GMC Savana 3500 Base 2006
GMC Savana 3500 Base 2007
GMC Savana 3500 SLE 2005
GMC Sierra 1500 Base 2002
GMC Sierra 1500 Base 2003
GMC Sierra 1500 Base 2004
GMC Sierra 1500 Base 2005
GMC Sierra 1500 HT 2002
GMC Sierra 1500 SL 1999
GMC Sierra 1500 SL 2000
GMC Sierra 1500 SL 2001
GMC Sierra 1500 SL 2002
GMC Sierra 1500 SL 2003
GMC Sierra 1500 SL 2006
GMC Sierra 1500 SLE 1999
GMC Sierra 1500 SLE 2000
GMC Sierra 1500 SLE 2001
GMC Sierra 1500 SLE 2002
GMC Sierra 1500 SLE 2003
GMC Sierra 1500 SLE 2004
GMC Sierra 1500 SLE 2005
GMC Sierra 1500 SLE 2006
GMC Sierra 1500 SLE 2007
GMC Sierra 1500 SLT 1999
GMC Sierra 1500 SLT 2000
GMC Sierra 1500 SLT 2001
GMC Sierra 1500 SLT 2002
GMC Sierra 1500 SLT 2003
GMC Sierra 1500 SLT 2004
GMC Sierra 1500 SLT 2005
GMC Sierra 1500 SLT 2006
GMC Sierra 1500 WT 2002
GMC Sierra 1500 WT 2003
GMC Sierra 1500 WT 2004
GMC Sierra 1500 WT 2005
GMC Sierra 1500 WT 2006
GMC Sierra 1500 WT 2007
GMC Sierra 1500 Classic SL 2007
GMC Sierra 1500 Classic SLE 2007
GMC Sierra 1500 Classic WT 2007
GMC Sierra 2500 SL 1999
GMC Sierra 2500 SL 2000
GMC Sierra 2500 SL 2001
GMC Sierra 2500 SLE 1999
GMC Sierra 2500 SLE 2000
GMC Sierra 2500 SLE 2001
GMC Sierra 2500 SLT 1999
GMC Sierra 2500 SLT 2000
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 2001
GMC Yukon SL 2006
GMC Yukon SLE 2000
GMC Yukon SLE 2001
GMC Yukon SLE 2002
GMC Yukon SLE 2003
GMC Yukon SLE 2004
GMC Yukon SLE 2005
GMC Yukon SLE 2006
GMC Yukon SLT 2000
GMC Yukon SLT 2001
GMC Yukon SLT 2002
GMC Yukon SLT 2003
GMC Yukon SLT 2004
GMC Yukon SLT 2005
GMC Yukon SLT 2006
GMC Yukon XL 1500 SL 2006
GMC Yukon XL 1500 SLE 2000
GMC Yukon XL 1500 SLE 2001
GMC Yukon XL 1500 SLE 2002
GMC Yukon XL 1500 SLE 2003
GMC Yukon XL 1500 SLE 2004
GMC Yukon XL 1500 SLE 2005
GMC Yukon XL 1500 SLE 2006
GMC Yukon XL 1500 SLT 2000
GMC Yukon XL 1500 SLT 2001
GMC Yukon XL 1500 SLT 2002
GMC Yukon XL 1500 SLT 2003
GMC Yukon XL 1500 SLT 2004
GMC Yukon XL 1500 SLT 2005
GMC Yukon XL 1500 SLT 2006
GMC Yukon XL 2500 SLT 2000
GMC Yukon XL 2500 SLT 2001
Hummer H2 Base 2003
Hummer H2 Base 2004
Hummer H2 Base 2005
Hummer H2 Base 2006
Hummer H2 Base 2007
Pontiac Firebird Formula 1998
Pontiac Firebird Formula 1999
Pontiac Firebird Formula 2000
Pontiac Firebird Formula 2001
Pontiac Firebird Formula 2002
Pontiac Firebird Trans Am 1998
Pontiac Firebird Trans Am 1999
Pontiac Firebird Trans Am 2000
Pontiac Firebird Trans Am 2001
Pontiac Firebird Trans Am 2002
Pontiac GTO Base 2004
Pontiac GTO Base 2005
Pontiac GTO Base 2006