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 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). 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 Colour:Black Material:plastic Package Contents: 5PCS x 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.