Gcarpenter

I have an e500 W211, it came with command pre installed.

I installed the Nav processor in the trunk, there is a connection for the optic ring pre installed at the Nav processor, but it is not connected to anything.

Can someone provide guidance on where the other end of this fiber ring connects to.

I appreciate the help.

Gcarpenter

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.

Gcarpenter

I was able to get this working, I have attached the instruction in case anyone's car has the U36 code for command pre-installation.