My C2 has a 5-pin tone cabinet output and no Leslie (half moon) switches.

I probably need a 5-pin to 6-pin cable and a halfmoon switch to operate a 2-speed leslie, right?

Thanks in advance

Right,and you should carefully consider mounting it toward the center to make it easier to toggle speeds for those cool effects.At least that is what the pro's of the 60's told me. I mounted it just to the left of center so that the left thumb can reach the switch without leaving the keyboard.
Just an opinion.

Good luck
Bernie

you have email