Electric and electronic circuits; Electric cables, wires, conductors and connection fittings therefor; Electrical and electronic connectors; Electrical connector housings; Electronic data loggers; Electronic motor vehicle ignition tuning kits comprised of an electronic control unit that monitors engine performances and delivers re-calculated sensor values to the original engine control unit to increase engine performance; Electronic servo motor controllers; Radio receivers for remote controls; Radio transmitters for remote controls; Voltage monitor modules; Voltage regulators