Usage Tips:Item type: Bluetooth Car Kit Model Name: 3pin plug Special Features: car auxiliary bluetooth audio cable Item weight: 0.1 kg The bluetooth module is made forBMW E39 E46 E38 E53 X5. Just plug the 12pin connector into the socket back from your radio You can simply insert this item to the back radio then connect the red wire to 12 V +, the black wire to 12 V +. Match your phone or pad to bluetooth module. and Choose Aux from your radio, then you can use your phone to play music through speakers. You can hear music from your phone / pad / mp3 (They must have blueooth function). Compatible for: 2002-2006 forBMW (E46): 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3 (Coupe, Sedan & Cabrio) 09/2002 + 2002-2003 forBMW (E39): 525i, 525iT, 530i, 530iT, 540i, 540iT & M5 (Sedan) 09/2002 + 2002-2006 forBMW (E53): X5 3.0, 4.4, 4.6, 4.8 and X5 M 10/2002 + In compatible for: Radio for BMW BM54 board monitor / navigation system from 09/2002 With optional SA 602/609 only colour:black Material:ABS size:Item size: 33 cm Package Contents: 1*Car Bluetooth Module Only the above package content, other products are not included. Note: Light shooting 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.