Abstract: A key-configured transmitter design has a housing for containing the electronics thereof and a key blank which may optionally be cut to conform to the key shape of the vehicle ignition key or any other key the user might otherwise use on a regular basis. In this manner, it is possible to substitute the transmitter of the present invention for a key that the user would otherwise retain in his pocket or purse, thereby obviating the relative inconvenience of prior art transmitters, which require the addition of a transmitter device to their pocket or purse. The key blank serves the dual purpose of a real key such as for operating the vehicle's ignition and also as an antenna for radiating the oscillator signal produced by the transmitter of the invention.

Abstract: A solenoid activated locking system primarily for hood and trunk manual release systems for vehicles. The solenoid is connected to a cable tied to the latch of a conventional hood or trunk release system. Unless activated, the solenoid prevents manual release of the trunk or hood lids to prevent access to the truck or engine compartment to someone who has obtained unauthorized access to the vehicle interior. The solenoid is automatically actuated for a preselected period of time whenever the ignition is turned on or off or when a reset switch is closed for more than a minimum and less than a maximum period of time. In addition, the solenoid is activated automatically during closure of the hood or trunk lid to permit secure engagement of the corresponding latch mechanism. An emergency release cable, hidden in an obscure location external of the vehicle, is provided for enabling manual release of the solenoid in the event of vehicle battery failure or other otherwise disabling event.