2009 Nissan Versa | Stereo Wiring Diagram 2009 Nissan Versa Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Brown Radio Accessory Switched 12v+ Wire: Light 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. Leave a Reply. 2009 Nissan Versa Car Stereo Wiring Diagram - ModifiedLife Whether your an expert Nissan Versa mobile electronics installer, Nissan Versa fanatic, or a novice Nissan Versa enthusiast with a 2009 Nissan Versa, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2009 Nissan Versa vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.