I have recently purchased a 2009 350 Ti. I am having trouble with the factory head unit wiring. It is the 9 speaker bose system with built in navigation, I can't locate the signal wires between the head unit and the amp. As I am trying to wire in an after market processor so I can run a different amplifier. FL, FR, RL & RR wiring is the only wires left that I need,

Any help would be muchly appreciated.. Thanks

 

Something Like this do ya? Not sure about the wiring where the steering wheel is on the incorrect side of the car