The bluetooth module is made for 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 12V+, 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 through car speakers.- You can hear music from your phone/pad/mp3(They should have blueooth function). Colour: Black material: plastic Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers. Compatible for : 2004 - 2010 for (E60): 5-Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2003 - 2010 for (E63) (E64): 6-Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2002 - 2008 for (E65) (E66): 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (and ) for M-ASK, ASK-CD and for 1er Serie (E87, E88, E81, E82),Serie 3 (E90-E91-E92) Note: 1. Please make sure that this connector of 12-pin socket casing fits for your car before you bid 2. Please make sure that this only works with Head Unit with "MODE" button . It's not compatible with old units without MODE button or cassette or Navigation Players. Package includes : 2pcs aux bluetooth adapter