if you already have all of the wiring in place (what year?), its a question of swapping out the non activated unit for this one. there was a stretch of time where the wiring is in place and a unit is in place for the BMW SOS system, but the units dont support bluetooth. If so, its a simple swap. If not, its much more complex, but not impossible. There is also the matter if you have a ULF which is the setup inside the glovebox.

Ill PM you on the plate frame.

thanks

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