controlpanel

I have one Sega VS City panel that might not be authentic, it uses threaded posts instead of the raised wings I've seen on all their other panels, so I didn't have a mounting plate to use a 50mm Seimitsu stick (LS-32, Nobi etc) on it. So I made one. Official release and download here.

I need some help figuring out how to wire the controls to my mahjong boards. I will write what I think I understand. Please correct me and jump in with anything I'm missing. This is the control panel I have and I was thinking of maybe getting this harness. Given that the pinout for mahjong...