[Antennas] motor driven vacuum variable question

[rb]

I have one of those modularized vertical pull 0-3000pfd variable capacitors
that have a 28vdc motor drive.  It has limit/stop/reversing circuits that
terminate in a small D ring 15 pin socket.  Looks like it could have been
made by Collins.  The vacuum variable is a Jennings.

A few years back, some nice ham sent me a circuit diagram of this thing, and
I somehow (foolishly?) lost it.

If anyone has the wiring diagram, I'd sure like to get a copy.   All help

73 de Ron, K5BDJ