Guess they changed it. You can swap the wires to reverse the switch function, so it runs constantly and you step on it to turn it off, and hold it off with your foot, but you can't wire it so that it holds on or off without pressure on it I guess the first and unwired third lead bridge to the second lead which is wired, but the spring in the switch is only one position, so it doesn't stay down without pressure. Bummer.