Curtschow, I think you maybe right because the wiring diagram doesn’t show any higher voltages than 12v so I would have to assume 12v is the max.
Debe, I will post the wiring and a detail wiring layout for the ignition system. I know that there isn’t another computer; however after studding the original CDI unit, I found a square black component on the circuit board that resembles a cpu chip. This chip component is black-out with a lot of traces going into it from all sides. It does not have a part number, but from what I read I think its Fuji Electric timing processor for ignition systems but it’s just my guess.