Feature: 1. Just plug the 12pin connector into the socket back of your radio. 2. You can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V-. 3. Plug and play, installation is very simple. 4. Match your phone or pad for bluetooth module, and Choose Aux from your radio, then you can use your phone to play music through car speakers. 5. You can hear music from your phone/pad/mp3(They should Compatible with blueooth function). Specification: Item Type: Aux Receiver Adapter Compatible with Bluetooth: 4.1+ EDR Compatible Models : Fit for PIONEER Radio IP-BUS input Following Models Reference : Fit for DEH-P 2500 R, Fit for DEH-P 2600 R, Fit for DEH-P 3500 MP, Fit for DEH-P 6600 R, Fit for DEH-P 9600 MP, Fit for DEH-P 3100 UB, Fit for DEH-Fit for DEH-P 5100 UB, Fit for DEH-P 7100 BT, Fit for DEH-P 8100 BT, Fit for DEH-P88RS-II, Fit for DEH-P88RS, etc.. Package List: 1 x Aux Receiver Adapter Note: Make sure the adapter is compatible with your vehicle before purchasing.