This is bluetooth module is made specially for BMW vehicles.Compatitible with 09/2002 or newer BMW E46 3 Series Business CD head units ONLY (E46 with SA 661/650)
There is filter inside so when you switch between CD and AUX,the sound volumn is same.
Easy to install:
1.Insert the Black 8pin connector to the radio
2.Connect the red wire to 12V+, the black wire to 12V-
3.Pair your phone or pad with bluetooth module.
4.Choose Aux from your radio
5.You can use your phone to play music through car speakers.
Cable length:25cm.
High quality!!!
