Abstract: An electrical system for providing an audible or visible warning and interior and exterior visible displays indicating whether the occupants of a motor vehicle have fastened their seat belts, in compliance with legal requirements and/or the will of the driver. The system involves a plurality of circuits each of which is associated with a driver's seat sensor switch, with a seat belt latch and with an interior display panel, and at least some of which are also associated with exterior display lights. Each said circuit has a seat belt latch for closing or opening said circuit, when the driver's seat sensor switch is closed, to change the condition of a light at a corresponding position on the interior display panel and, for at least the front seat belts, to change the condition of a corresponding exterior display light.

Abstract: Digital code-controlled ignition and security system for a vehicle, including an alcohol-detector device for preventing ignition in presence of predetermined alcohol content in the breath of the operator. Apparatus includes digital module which is programmable to desired first ignition mode code and second security mode code. Ignition coil/distributor and starter solenoid/motor are deenergized in absence of proper ignition code, and starter solenoid/motor remains deenergized in absence of alcohol-detector approval. Alarm system is armed by security code, activated by any one of a plurality of detectors and cannot be deactivated until another code is entered into digital module. Remote transmitter/receiver is provided to activate alarm for testing or vehicle-location purposes, and to receive signal at remote location when alarm has been activated.