Western Electric LINE STATUS INDICATOR 24A-type

[JB-Alert]

I'm looking for the BSP 463-210-101; this is for for the Western Electric 24A Line Status Indicator.  There is one ebay now (search "ATT-WESTERN-ELECTRIC-TYPE-24B-INDICATOR-BB  or item number 192420143885).

This was used mainly for Centrex customers; the unit showed what line was busy or ringing via a LED, with a desi strip next to it; unit usually sat on a secretary's desk.  The unit was stackable, coming in 8, 16 and 32 line configurations.  It had a 25 pair cable connected to it for the 8 and 16 line versions.

Basically I just need to know the wiring assignments, the cable from the power transformer terminates inside the amphenol cable end.  I've searched the internet, and the numerous BSPs, but can't find the copy- they all seem to stop at the one prior to it!  The BSP is listed in the master index too!  Any help would be appreciated!!