1The audio module compatible with Bluetooth is suitable for E39 E46 E38 E53 X5. 2Easy to use,just plug the 12pin connector into the socket on the back of the radio. 3Match your phone or tablet to the module compatible with Bluetooth, then select Aux from the radio, and then you can use your phone to play music through the car speakers. 4You can listen to music from your phone/tablet/mp3 (compatile with Bluetooth). 5You can insert this item into the rear radio, then connect the red wire to 12V + and the black wire to 12V-.1 x ModuleItem Type:AUX-In Audio Module_x000D_Condition:100% Brand New_x000D_Material:ABS_x000D_Color:Black_x000D_Fitment:_x000D_Fit for E46 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3 (Coupe, Sedan & Convertible) 2002~2006_x000D_Fit for E39: 525i, 525iT, 530i, 530iT, 540i, 540iT & M5 (Sedan) 2002~2003_x000D_Fit for E53 X5 3.0, 4.4, 4.6, 4.8 and X5 M 2002~2006_x000D_Compatible with Radio for BM54-board monitor / navigation system from 09/2002_x000D_With optional SA 602/609 only 1The audio module compatible with Bluetooth is suitable for E39 E46 E38 E53 X5. 2Easy to use,just plug the 12pin connector into the socket on the back of the radio. 3Match your phone or tablet to the module compatible with Bluetooth, then select Aux from the radio, and then you can use your phone to play music through the car speakers. 4You can listen to music from your phone/tablet/mp3 (compatile with Bluetooth). 5You can insert this item into the rear radio, then connect the red wire to 12V + and the black wire to 12V-.1 x Module