Automotive measuring instruments, namely, water temperature gauges, air fuel/ratio gauges, boost gauges, vacuum gauges and exhaust gas temperature gauges; Automotive testing equipment, namely, handheld diagnostic scanners; Automotive testing equipment, namely, transmission testing and brake testing equipment; Computerized vehicle engine analyzers; Digital switching systems comprised of interconnected electromechanical and solid-state power management enclosures with standard and custom keypads for user remote control, the foregoing for use on marine helms and land-based vehicle dashboards; Downloadable software for connecting, operating, and managing networked cars in the internet of things (IoT); Downloadable software for connecting, operating, and managing networked kitchen appliances in the internet of things (IoT); Downloadable software for connecting, operating, and managing networked HVAC systems in the internet of things (IoT); Electric cords for use with recreational vehicles; Electric cords for use with computers; Electric wire harnesses for automobiles; Extension cords for use with recreational vehicles; Extension cords for use with computers; Heads-up displays (HUDs) in the nature of transparent electronic displays for use in general aviation aircraft; Heads-up displays (HUDs) in the nature of transparent electronic displays for use in projection of data from a mobile device onto a vehicle windshield; Heads-up displays (HUDs) in the nature of transparent electronic displays for use in providing motorcycle riders with navigational and operational information; Navigational apparatus for automobiles