GMC Topkick C5500

2003 GMC Topkick C5500 Stereo Wiring Information Radio Battery Constant 12v+ Wire: Orange Radio Ground Wire: Black/White Radio Illumination Wire: Gray Stereo Dimmer Wire: Violet/White Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green … Read more