Patent ID: 8261872

Claim:
A work machine having a frame, an engine supported by the frame, a hydraulic system powered by the engine, a source of electrical power, and electrical systems which run on the electrical power, the work machine further comprising: an operator compartment supported on the frame; an ignition system coupled to and controlling ignition of the engine; a modular ignition switch keypad mounted to the work machine in the operator compartment and having a start user input, a run user input, a stop user input and latching logic circuitry providing a latching output, wherein the latching logic circuitry has a set input and a reset input and wherein the run user input is in communication with the set input and the stop user input is in communication with the reset input; and wherein the modular ignition switch keypad is configured such that actuation of the start user input causes the ignition system to start the engine, wherein the modular ignition switch keypad is configured such that actuation of the run user input provides a signal to the set input to causes the latching logic circuitry to toggle the latching output to a run state in which electrical power is provided to the electrical systems, and wherein the modular ignition switch keypad is configured such that actuation of the stop user input provides a signal to the reset input to cause the latching logic circuitry to toggle the latching output to an off state in which electrical power is not provided to the electrical systems and in which the engine is turned off if running.