Fitment ---------Car Bluetooth Adapter for DEH-P 2500 R, for DEH-P 2600 R, for DEH-P 3500 MP, for DEH-P 6600 R, for DEH-P 9600 MP ,for DEH-P 3100 UB,for DEH-P 4100 SD,for DEH-P 5100 UB, for DEH-P 7100 BT, for DEH-P 8100 BT , for DEH-P88RS-II, for DEH-P88RS.Make sure the adapter is compatible with your vehicle before purchasing.High-quality material --------- The Car Bluetooth Cable AUX Adapter is made of ABS material, which is , easy to store, small in size, light in weight, wear-resistant, easy to carry, and has a long service life.You can wind it up without worrying about knots or kinks.Function --------- Car for Audio Stereo Module for PIONEER IP-BUS input, Bluetooth: 4.1 + EDR, please make sure the adapter is compatible with your vehicle before purchasing, providing uninterrupted music function, providing guarantee for your driving safety, increasing.Connection Method ---------The Bluetooth AUX Adapter only needs to connect to the 12-pin connector on the back of the radio; just plug it into the back of the radio and connect the red to 12V+ and the black to 12V-; ensure a stable connection between your phone and non-Bluetooth audio player.How to Use ---------The Bluetooth module is designed for IP-BUS port; you can listen to music on your phone, tablet and mp3 freely (must have Bluetooth), select Aux from the radio, you can play music on your phone through the car speakers, listen to music on your tablet and mp3 (must have Bluetooth).