Connects directly to standard OEM connector and upgrades vehicles from 4-flat OEM wiring to 7-way connectors. Exact replacement for damaged OEM wiring harnesses. Installs in seconds on vehicles not factory pre-wired. 55-7525 and 55-7550 allow the vehicle 7-way plug and a 4-flat harness to be installed at the same time. Priced each. 2003-2004, AM General Hummer H2 2004-2004, Buick Rainer w/OEM Tow Package 2002-2005, Cadillac Escalade Includes EXT & ESV 1999-2005, Chevrolet Pickup, Silverado w/OEM Tow Package 2000-2005, Chevrolet Tahoe New Body Style w/Amber Turn Signals 2000-2005, Chevrolet Suburban New Body Style w/Amber Turn Signals 2002-2005, Chevrolet TrailBlazer w/OEM Tow Package 2002-2005, Chevrolet Avalanche 1999-2005, GMC Pickup, Sierra w/OEM Tow Package 2000-2005, GMC Yukon New Body Style w/Amber Turn Signals 2000-2005, GMC Yukon XL 2001-2005, GMC Yukon Denali New Body Style w/Amber Turn Signals 2001-2005, GMC Yukon XL Denali 2002-2005, GMC Envoy w/OEM Tow Package 2003-2004, Isuzu Ascender w/OEM Tow Package 2004-2004, Nissan Pathfinder Armada w/OEM Tow Package 2004-2004, Nissan Titan w/OEM Tow Package 2002-2004, Oldsmobile Bravada w/OEM Tow Package