All, I am planning to retrofit the cubby hole USB connection. That means fitting the connection in the cubby (PIA), the Portable Audio Module (PAM) under the LH seat, and cabling which will not be in place. There is the hardwired part between the head unit and the PIA (possibly quite fiddly) and the hardwired connection between the PAM and the junction box (most likely just power). Finally the PAM needs to be part of the MOST ring.

Now to the questions:
1) Does anybody know if the MOST ring has a connection under the seat?
2) Anybody got a picture of the connections to the head unit?

 

Bump?

 

Did you ever get this retrofit working?