Bestong 3.5MM AUX INPUT ADAPTER 12 Pin iP-BUS CABLE CD-RB10 CD-RB20 for PIONEER AVIC-Z1 Z2 Z3 N4 iPod MP3 Player Play your music through your PIONEER head unit (must have PIONEER IP-BUS CD changer input) Hear your music in much better quality then other iPOD connections You can't connect a CD Changer to the head unit at the same time while this cable is connected. Just plug one end of this cable into the CD changer input in the back of your stereo and the other end to the mini jack input on the device.