Metra 711858 Reverse Wiring Harness for Select 19872005 GM Vehicles

Reverse Wiring Harness for Select 1987-2005 GM Vehicles 21-pin plugs into OEM Radio Power/4 Speaker 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 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 (-)