Car Stereo Radio Wiring Diagram and Wire Colors - 2001 Car Stereo Radio Wiring Diagram and Wire Colors – 2001 Honda Accord. Whether your an expert installer or a novice enthusiast with a 2001 Honda Accord, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier,.. 2001 Honda Accord | Stereo Wiring Diagram 2001 Honda Accord Stereo Wiring Information. Radio Constant 12V+ Wire: White/Green. Radio Ignition Switched 12V+ Wire: White/Red. Radio Ground Wire: Black. Radio Illumination Dimmer Wire: Red/Black. Left Front Speaker Wire (+): Blue/Green. Left Front Speaker Wire (-): Gray/Black. Right Front Speaker Wire (+): Red/Green.