For PIONEER Radio IP-BUS input Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers.- You can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V-. Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers. You can hear music from your phone/pad/mp3(They should have blueooth function). Colour: Black material: plastic Bluetooth: 4.1+ Compatible models : for PIONEER Radio IP-BUS input Following models reference : DEH-P 2500 R, DEH-P 2600 R, DEH-P 3500 MP, DEH-P 6600 R, DEH-P 9600 MP DEH-P 3100 , DEH-P 4100 SD, DEH-P 5100 , DEH-P 7100 BT, DEH-P 8100 BT DEH-P88RS-II, DEH-P88RS, etc .. Package Contents: 2PCS Bluetooth adapter cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.