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Originally Posted by E90Fleet
Depends on your options, but can include
1) GPS antenna
2) Telephone Antenna
3) Sirius Radio Antenna ( USA Only )
4) I believe the new Digital radio reciever is also housed inside
Interestingly they say the ones with Sirius antenas are slightly bigger than the ones without
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Your Wrong.
90% off the cars are prewired for all 4 and it doesnt matter what country you are in.
I have a 325I, in canada, and am prewired for all 4. The wires lead to the trunk where the nav unit and sirius unit would normally be mounted. Where the spare tire well is in normal vehicles.
The plugs for these are generic and would plug into a wifi antenna/gps antenna and most likely work
I had an aftermarket gps unit and XM radio running off these a while ago.
as long as your car is sirius prewired or nav prewired you will have these. find them in your car configuration.