US.online911 Bluetooth Wireless Module Radio Stereo Aux Cable Adaptor For PIONEER IP-BUS This bluetooth module is specially for Pioneer radio. Just plug the connector into the back of the radio,and connect the two wires to 12V power. Pair your phone or mp3 or pad with bluetooth to the module. Choose Aux in front panel. You can hear music from your phone/pad/mp3(They should have blueooth function).