Abstract: A vehicular switch for activating and deactivating a circuit or circuits in response to movement of one vehicular component relative to another such as a door relative to a door frame. The switch is a compact miniaturized unit insertable in the fixed component and self-adjusting to accommodate variations in spacing between fixed and movable components. Seals are provided to block access of water or other destructive materials irrespective of the position of the movable vehicle component relative to the fixed component. All electrical elements are completely enclosed in a weather-tight package.

Abstract: A switching system operable in response to the travel of a vehicular lever or pedal such as a clutch for opening and closing operating circuits of the vehicle. The system includes actuators for moving switch contacts to change the conditions of the circuits in which they are incorporated and extension arms connected to said actuators through ratchet-and-pawl mechanisms. The extension arms are contacted and moved by an arm of the vehicular lever or pedal against spring bias which returns the actuators to the positions they were in before contact by the pedal arm. The ratchet-and-pawl mechanisms automatically compensate for increases in travel and may be reset for decreases in travel of the lever or pedal.