Sorry I know this gets covered a lot but I really have read every thread on here relating to this and I'm still not sure how to do this so any tips would be appreciated! I'm fitting the standard Audi bluetooth into a 58 plate S3 Sportback - microphone, connections to stereo and routing the cable I'm pretty sure I've got sorted it's just the location/mounting of the bluetooth module that has me stumped. From everything I've read it seems that the "correct" location is under the passenger seat and I have seen a "plastic case" mentioned that it is supposed to mount to. Can anybody give any more details - I can't see anything to mount it to under the seat, I have no "plastic case" and if you just sit the module on the floor under the seat then the seat hits the module when you pull it forward. Thanks.