Car Stereo Radio Wiring Diagram - 1992 Honda Accord Car Stereo Radio Wiring Diagram – 1992 Honda Accord. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier, car navigation or any mobile electronics is identifying the correct wires for a 1992 Honda Accord. 1992 Honda Accord | Stereo Wiring Diagram 1992 Honda Accord Stereo Wiring Information. Radio Constant 12V+ Wire: White/Yellow. Radio Switched 12V+ Wire: Yellow/Red. Radio Ground Wire: Black. Radio Illumination Wire: Red/Black. Radio Power Antenna Trigger Wire: Yellow/White. Left Front Speaker Wire (+): Blue/Green. Left Front Speaker Wire (-): Gray/Black.