Only works on Clay Boss model wheels with a 3-wire foot pedal connection.

You can check inside the foot pedal, or inside the control box to make sure the wires from foot pedal to control box are only 3 wires. not 4 wires. 

If you have 4 wires, or an original "Creative Industries" Clay Boss,  you will need a control box and foot pedal upgrade known as the "Clay Boss Control Update" see below.