65 Dart Wiper Switch Breaker

I didn't know there is a circuit breaker inside the switch. The old switches do have a little box that looks like a breaker mounted on a flat stalk on the outside. One trick with the switches is that some terminals are just convenient junctions to chain power on to other devices, and have nothing to do with the switch functions. There are also several varieties of the switches. I recently scored a 1965 variable-speed switch with the "washer" terminal (push knob to actuate) at PickNPull. I already had one without the washer feature.