2004 Honda Accord 6 Speaker System Car Stereo Radio Wiring Whether your an expert Honda electronics installer or a novice Honda enthusiast with a 2004 Honda Accord (6 Speaker System), a car stereo wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car stereo, car radio, car speakers, car amplifier, car navigation or any car electronics is identifying the correct color wires for a 2004 2004 Honda Accord 6-Speaker | Stereo Wiring Diagram 2004 Honda Accord 6-Speaker. August 19th, 2012 Posted in Honda Accord 6-Speaker. 2004 Honda Accord 6-Speaker Stereo Wiring Information. Radio Constant 12v+ Wire: White/Green The stereo wiring diagram listed above is provided “as is” without any kind of warranty. Use of the information above is at your own risk.