Motor vehicle measuring instruments, namely, pressure, water temperature, fuel level, air/level ratio, and vacuum gauges and sensors; tachometers; speedometers; ammeters; voltmeters; hour meters, namely, electric devices for measuring in fractions of an hour how long engine equipment has been in use; pyrometers; computer software, namely, data acquisition and analysis software for monitoring and analyzing motor vehicle performance and the performance of engine systems; data acquisition hardware, namely, electronic proximity sensors and switches, pressure sensors, temperature sensors, and sensors for determining position, velocity, acceleration; sensor harnesses, namely, electronic data relays for sensors; seal connectors, namely, cable connectors; signal converters and adapters; data recording modules, namely, electronic monitors and monitor modules for monitoring electric current and electrical signals; data loggers, namely, electronic data recorders for recording, classifying, monitoring, and logging vehicle and engine systems performance data; electric warning lights; mounting units for motor vehicle measuring instruments, namely, electronic luminescent display panels; kits comprised of electronic luminescent display panels; motor vehicle charging system analyzers, namely, logic analyzers; battery chargers; battery testers; electric meter for automobile that displays an input signal in either a digital or analog form; electric meter for motorcycle that displays an input signal in either a digital or analog form; electric meter for boat that displays an input signal in either a digital or analog form