Retrofit telephone docking cradle

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Hi
I have a 2009 X5 48i, I have Bluetooth and BMW assist, I want to buy a(Eject Box) so I can put the snap in adapter for the specific phone I have, this cradle will have pwer and also the antenna connection, when I removed the cover to see if there was any wiring inside to connect could not see any.
What do I have to do, if wiring is needed do I have to take the console out, any help and ideas and/or schematics will be highly appreciated

The description of the cradle: docking cradle allows the use of phone "snap-in" adapters for charging the phone battery and connecting to an external phone antenna. Once the complete phone kit is installed, snap-in adapters can be changed in a matter of seconds to accommodate different phones. Vehicle must be equipped with Premium Package or BMW Assist with Bluetooth wireless technology.


Eject Box for Snap-In(PN: 51 16 9 203 443)
Screws(PN: 07 14 9 144 003) (qty:2)
$214.78