Hammond Pk-25

[Etorgerson]

I'm looking to see how I can power the pk-25 without the keyboards. I do not have one yet, but am looking at one as a compact midi controller. It appears to use and 8 or 9-pin din plug for power. I saw a video posted by Kevin Robinson called Hammond SKX with SK-25 CLAVIER (Pedal Board) on youtube in which he appears to have a wall-wart type of power supply with a 9-pin din for the expression pedal/midi processor. Hopefully, I'll be able to reverse engineer one if I have to, but does anyone have any ideas on any of the following:

1. Where could I find a wall-wart ac to plug into the expression pedal box? (Kevin lists Vince Seneri.)
2. What is the voltage? (Does the PK use the same power as the XK, looks like the same electronics in the pedal.)
3. Which pins?
4. Has anyone else used these pedals?
5. Any reviews or tips on using and maintaining them?

P.S. This is me settling on 25 pedals when I've always wanted a 32-note Allen compact pedal set, but could never afford one.
Thanks,