2007 GMC Sierra 1500
2007 GMC Sierra 1500 Stereo Wiring Information Radio Battery Constant 12v+ Wire: Red/White Radio Accessory Switched 12v+ Wire: Dark Green Radio Ground Wire: Black Stereo Dimmer Wire: Yellow Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire … Read more