BMW: 2003 bmw 745li, bmw 745li, optical cable

Question
I work in the aftermarket electronics field.
I was wondering if these new 7 series have an actual ignition circuit in the vehicle.  Every circuit, fuse etc. seems to be constant. I need to know if there is a circuit I can tap for ignition controled items.  Any information would be helpful and greatly appreciated.  Thanks.

Answer
Nada, dont tap into anything on a 745 you might be hitting optical cable. The CAS sends a bus signal to wake the vehicle up. This car is so particular dont even think of putting anything aftermarket on it. Dont even upgrade the software in the phone, it causes it to quit working in the car.