Professional pure copper core, which keeps excellent conductivity and safe use. RED WOLF car radio stereo harness is used to replace factory or broken stereo harness. Easy to install. Without cutting any OEM wiring harness. Car stereo radio harness comes with wire connector butt makes installation more convenient and quickly. Red wiring is not for all models, but if the OEM radio harness of your vehicle does not have an ignition wire, the aftermarket stereo cannot be turned off /on through the OEM radio harness. To solve this problem, you need to get a 12v power supply from the ignition by running the red cable separately from the factory radio harness. Stereo harness replacement for Chevrolet Avalanche(2003-2006),Cavalier(2000-2005),Colorado(2004-2012),E, 2001 - 2002 Express Van, Impala(2000-2005), Malibu (2004-2005) Classic Models ONLY, Malibu (2000-2003), Monte Carlo (2000-2005), Silverado (2007) Classic Models ONLY, Silverado (2003,2004,2006), SSR (2003-2006), Suburban (2003-2006), Tahoe (2003-2006 Non-Bose), Trailblazer (2002-2009), Uplander (2005-2008), 2000 - 2005 Venture Van, 2002 - 2005 Blazer, 2005 - 2009 Corvette. RED WOLF 24-pin car stereo radio wiring harness is NOT COMPATIBLE WITH AMP SYSTEMS LIKE BOSE, INFINITY, etc.. radio wiring harness compatible with GMC Sierra (2003-2007), GMC Canyon (2004-2012), GMC Envoy (2007-2009), GMC Envoy (2002-2006), GMC Savana (2003-2007) Full Size Van RED WOLF, GMC Yukon / Yukon XL (2003-2006).