1、The Bluetooth Audio Adapter fits for E63 E64 E61 2、Just plug the 12pin connector into the back socket of your radio 3、You can simply insert this item to the back of the radio then connect the red wire to 12V +, the black wire to 12V -. 4、Match your phone to the Bluetooth module. Choose Aux from your radio, so you can use your phone to play music through car speakers. 5、You can listen to music from your phone / tablet / mp3 (They must have Bluetooth function). Features: The Bluetooth Audio Adapter fits for E63 E64 E61 Just plug the 12pin connector into the back socket of your radio You can simply insert this item to the back of the radio then connect the red wire to 12V +, the black wire to 12V -. Match your phone to the Bluetooth module. Choose Aux from your radio, so you can use your phone to play music through car speakers. You can listen to music from your phone / tablet / mp3 (They must have Bluetooth function). Specification: Condition: 100% Brand New Item Type: Car Bluetooth Audio Adapter Fitment: Fit for E61 E62 model Fit for E60 5-Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2004 - 2010 Fit for E63/E64 6-Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2003 - 2010 Package List: 1 x Car Bluetooth Audio Adapter