Can anyone tell me where the X39/50 connection is at, where WIS says it is located by the back seat, it is not there, the optic connection for the nav processor is not connected to the optic ring and I cannot figure out where to connect it. I have read Mercedes Upgrade website, but it is oriented for retrofit when the car was not pre-wired. I called the dealer and wasted that phone call, they were no help at all. Fiber module 13 exits the hand-free module as module 14 which is the input to the nav processor, but those modules are not connected together and I was hoping someone knew where to tie them together on the ring.
I have attached the WIS instructions.