Here is a scan of the 1989-1990 MCL2 System Guide that I have:
https://archive.org/details/Bang-Olufsen-Master-Control-Link-2-System-Manual-89-90
It’s for the North American market, which may make it of special interest. The NTSC MX5000 and VX5000 are big focus of the publication. I’d be especially interested in how it differs from the “March 1990” one in @Madskp ‘s post!
Most of the in-wall installation items at the end are European — however, I have some North American wall parts in my collection that I’d like to document as well.