When pushed in all the way, the switch is turned off. When pulled to the first stop, the first circuit is activated. At the second stop the first circuit is deactivated and the second circuit is activated.420410(-1) Off / Circuit 1(Anchor) Circuit 1(Anchor) Circuit 2(Running) Three Position / One Circuit420400(-1) Off / Circuit 1 + 3(Anchor) Circuit 2(Running) Three Position / Two Circuit