Product Features: Reverse Wiring Harness for Select Impala and Monte Carlo Vehicles; Plugs into OEM Radio; Power/4-Speaker; One 16-pin plug and one 14-pin plug; No 12V Accessory output; Harness is designed to plug in the factory radio; Can be used to repair a harness where the plugs have been cut off or damaged; Authorized Internet Dealer; 1-year Manufacturer's warranty. Check the Product Instructions to see basic instructions and compatibility list for the Metra 71-2105. Connections: Yellow - 12V Constant; Red - 12V Accessory; Black - Ground; Orange - Dash Light Dimmer/Illumination; Green - Left Rear Speaker (+); Green with Black Stripe Left Rear Speaker (-); White - Left Front Speaker (+); White with Black Stripe - Left Front Speaker (-); Purple - Right Rear Speaker (+); Purple with Black Stripe - Right Rear Speaker (-); Gray - Right Front Speaker (+); Gray with Black Stripe - Right Front Speaker (-); Compatible with the following vehicles: Buick: o 2008 - 2009 Enclave; o 2006 - 2009 Lucerne; Cadillac: o 2006 - 2009 DTS; o 2007 - 2009 Escalade; o 2007 - 2009 SRX; Chevrolet: o 2006 - 2009 Impala; o 2006 - 2007 Monte Carlo; o 2007 - 2009 Suburban; o 2007 - 2009 Tahoe; o 2007 - 2009 Silverado; o 2007 - 2009 Avalanche; GMC: o 2007 - 2009 Yukon; o 2007 - 2009 Acadia; o 2007 - 2009 Sierra; o 2008 - 2009 Savana