Beta SP Cam 6 pin to 12 pin conversion?

[Stuart Coburn]

Does anyone have the details/diagram/schematics etc for changing a Fujinon 3/4″ B4 mount Beta Sp lens from a 6 pin connector to a 12 pin? a search on google and the cow has failed to turn up anything.
I have some old kit (Sony bvw300/400 (12 pin) with Fujinon 10×10 lenses (6pin)) which i’m planning on donating to a local school for use in their theatre and the only solution to date is either finding new lenses or buying a converter lead for each one, which unfortunatley doesn’t fit in with the zero budget available.
Any help or nudges in the right direction would be most useful, Thanks