I recetly purchased a shesto cadet 121 which ran on an old bbc micro, I am in the middle of a retro-fit and need some advice.

1) Completely removed all inners.
2) Bough a system 4 - 4 axis control card, power supply unit and spindlemod board.
3) I currently have the 2 steppers fuctioning perfectly running through mach3,

4) I however was not under the impression I had to keep any of the old stuff installed to run the spindle motor.

How do I connect up my spindle motor to run again, and to what.

Many thanks in advance as I also have this in my livingroom and the missus is going nuts, 4 days before xmas