I used an XK1-C successfully with a Yamaha FC7 pedal. And I controlled my Vent from the multipin connector with a cable I wired myself.
Then I could control leslie speed from either a footswitch or the panel buttons. Slick setup.
Yup. That's exactly what the Thomann cable does. I just didn't trust myself to make my own so I ended up dropping a hundred bucks. Mate has skills.
Also,there are at least a couple of real "organ players" on this forum,myself included,who are ok with the EV5. I realize most here are not and that's fine with me. Just throwing out alternatives.
CEB, I've been eyeballing n XK1c/Vent and CP 73 as a lightweight rig after darn near hurting myself trying to sandwich one of my heftier rigs onto a tiny club "stage" last week.
I'm getting old and so many gigs these days are an every man for himself situation.