Get a 2003 Chevy Avalanche radio wiring diagram to help with installation or troubleshooting of your car's audio system.. The 03 Chevy Avalanche has one of the most complex wiring systems of any car on the market today. From amplifiers and audio setup to radio wiring, having accurate and clear diagrams goes a long way in helping you find the problem and understand which wire goes where.
RADIO Base Radio Wiring Diagram for Chevrolet Avalanche 1500 2003List of elements for Base Radio Wiring Diagram for Chevrolet Avalanche 1500 2003:A10A11A12AntennaAud out -B10B11B12BareCell voice sigCoaxCommon aud sigComputer data lines systemDigital radio antennaDigital radio receiver (if equipped)Drain wireG203 (near left \. 2003 Chevrolet Avalanche Stereo Wiring Information Radio Battery Constant 12v+ Wire: Orange Radio Accessory Switched 12v+ Wire: Yellow Radio Ground Wire: Black Radio Illumination Wire: Brown Stereo Dimmer Wire: Gray Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light.