Car Bluetooth Audio Receiver for Pioneer IP-BUS 11Pin Bluetooth Aux Receiver Adapter for PIONEER Radio IP-BUS input Match your phone or pad to bluetooth module.and Aux from your radio, then you can use your phone to play music 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-. Colour: Black material: plastic Match your phone or pad to bluetooth module.and Aux from your radio, then you can use your phone to play music through car speakers. You can hear music from your phone/pad/mp3(They should have blueooth function). 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 ... Contents: 1PCS Bluetooth adapter cable Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.