Feature: - The bluetooth module is made for BMW- Bluetooth 5.0 - Just plug the 12pin connector into the socket back of your radio - You can just Insert this item to the back radio then Connect the red wire to 12Vand, the black wire to 12V-. - Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to play music through car speakers. - You can hear music from your phone or pad or mp3(They should have blueooth function). Note: 1. Please make sure that this connector of 12-pin socket casing fits for your car before purchase. 2.If need car CD or radio support AUX function . Otherwise don"'"t buy . Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.