Hi raymondo30837,
The only thing I could find was
this site which lists the different models and a contact point for possibly obtaining the wiring diagram you describe.
There is also the possibility that the
Viscount Organ company website might be able to help you on your quest.
The 3rd option is installing a "midi" pedalboard. These are shown on
this site and may be another option should obtaining wiring diagrams become difficult or impossible.
Sometimes, complete wiring schematics are "proprietary" for an organ manufacturer. I worked with Allen Organs for years, and their drawings, even for the first digital organs (1972) are still proprietary information, although there might be some "bootleg" copies (illegal, of course) hanging around the bowels of the internet.
I'll keep searching as time permits - hopefully another member here might have additional information.