Abstract: A power switch operable to change between a conductive and non-conductive state for use with an ignition circuit of an internal combustion spark-ignited engine and adapted to be disposed between the output conductor of a high voltage generator or ignition coil and an ancillary system, such as an aftermarket ignition system, anti-theft system or speed control governor circuit. The power switch receives a high voltage pulse-type signal from the engine's original equipment high voltage generator or “coil” and connects the primary power source, such as a battery, to the auxiliary system. Power is supplied to the ancillary system in synchronization with the output signal from the high voltage coil.

Abstract: A power switch operable to change between a conductive and non-conductive state for use with an ignition circuit of an internal combustion spark-ignited engine and adapted to be disposed between the output conductor of a high voltage generator or ignition coil and an ancillary system, such as an aftermarket ignition system, anti-theft system or speed control governor circuit. The power switch receives a high voltage pulse-type signal from the engine's original equipment high voltage generator or "coil" and connects the primary power source, such as a battery, to the auxiliary system. Power is supplied to the ancillary system in synchronization with the output signal from the high voltage coil. The power switch is particularly adapted to permit use of aftermarket ignition systems and other auxiliary circuits with original equipment ignition systems without interrupting the electrical connections or systems that rely on signals from the high voltage generator or coil of the original engine ignition system.

Abstract: An ignition synchronization system and method of using the same are provided for the ignition systems of internal combustion engines. The system retains all of the parts of the vehicle's original ignition system. The system adds a new ignition device having a new spark energy generating coil. In addition, a spark energy signal converter is also provided. The spark energy signal converter and the new ignition device are connected in series, respectively, between the original coil and the vehicle's original elements for distributing the spark energy. The firing signal from the vehicle's electrical system triggers the original coil to generate a spark energy pulse. The spark energy signal converter absorbs the spark energy from the original coil and generates a signal indicating that the original coil pulsed. The converter, in turn, sends a firing signal to the new ignition system, which generates spark energy for the spark plug.