Wires su Amazon AdRisparmia su Wires. Spedizione gratis (vedi condizioni) 2004 Honda Civic | Stereo Wiring Diagram 2004 Honda Civic Stereo Wiring Information. Radio Constant 12v+ Wire: Blue/White Radio Switched 12v+ Wire: Yellow/Red Radio Ground Wire: Black Radio Illumination Wire 2004 Honda Civic Car Stereo Radio Wiring Diagram Whether your an expert Honda electronics installer or a novice Honda enthusiast with a 2004 Honda Civic, a car stereo wiring diagram can save yourself a lot of time.