That's how I perceived it to work. As it rotates, either the top or bottom of the flat rod end actuates the switch. Unfortunately, my switch and rod move in tandem, never triggering the switch. My stock switch (the one in the car when I bought it 20yrs ago) still works. I bought a new switch and it acts the same way.The switch is fixed against the flat on the brake push rod. When you press the pedal the angle of the switch is changed in relation to the pushrod. The flat part of the pushrod is no longer parallel with the body of the switch.
My bushing is an exact fit between the pedal pin and the rod. So I need a thinner bushing to allow a little bit of play between the bushing and the pedal pin?The bushing must be larger diameter than the pedal arm pin so that the pedal moves forward within in to bring the switch into contact with the pushrod.
So either the bushing is too small, or the assembly is too tight.
(BTW, the switch freely rotates on the pedal pin. there's no stay/stop that holds it in place. Is this correct?)