Abstract: An ignition switch system is provided for use with an engine of a vehicle. The ignition switch system includes a power source such as a battery, and an ignition switch connected to the power source. The ignition switch includes an off position and a combined run and start position. A controller is electrically connected to the ignition switch. A relay mechanism is electrically connected to the controller. A starter mechanism is electrically connected to the relay mechanism and is drivingly engageable with the engine of the vehicle. The ignition switch connects the power source to the controller when the ignition switch is in the combined run and start position. The controller, upon connection with the power source, determines if the engine is running. If the engine is not running, the controller activates the relay mechanism which engages the starter mechanism to the power source.

Abstract: A sensor communications network connects over a single-wire bus to smart sensors arranged in the latch mechanism of doors of a vehicle for lighting a courtesy light when the doors are open and for turning on an ajar indicator when the doors are ajar and/or open during the presence of the ignition voltage.

Abstract: A combination illuminated entry and door lock switch for a vehicle door lock assembly which provides voltage signals to a single wire bus and smart sensor multiplex control system for controlling turning on interior lights of the vehicle when a door handle is operated and for disarming a vehicle alarm system when a door key is turned in a door lock cylinder. Another embodiment includes a keyboard mounted in a cavity of the door handle assembly which permits sending voltage signals over the single wire bus to the smart sensor multiplex control system to control a variety of drivers and other control devices.