AUX input box on COMMAND system....
If it is a generic add-on AUX input that connects to any D2B Optical network, regardless of if you have the COMMAND or not, then it might be possible to get the AUX box without ordering the $2000 COMMAND system.
The pins you need are :-
AF-R = pin 4
AF-L = pin 13
AF shield = 5
AF shield = 14
It looks to me like the jack they use connects the two AF shield wires together when the plug is inserted, if you are keeping the feeds seperate Id put 4 and 5 together for Right input, and 13,14 for left input
Now, you may have wiring there already that goes to a 4 pin white coloured reasonably large connector in one of the wiring ducts. If thats the case then you need the lead that goes from there to the aux socket, and Im sure theres a part number for that in the CLK part of the dealer's electronic parts catalog
The cable colors are yellow, black, brown and transparent.



