9 Control devices for vehicle parts, vehicle components, vehicle attachments, vehicle accessories, trailer hitches for vehicles and vehicle couplings, namely, electronic controllers for land vehicles, remote controls for operating electric sensors in vehicles, remote controls for operating trailer hitches, remote controls for operating couplings for land vehicles, remote controls for operating electric control panels and computers, and electronic sensors that detect, measure, and analyze motion, vibration, multi-dimensional distribution of force, pressure, acceleration and orientation; Apparatus for collecting, displaying and detecting the operating and load conditions of vehicle parts, vehicle components, vehicle attachments, vehicle accessories, trailer hitches and vehicle couplings, namely, instruments and devices being computers, microcomputers, integrated circuits, electric sensors, and electric control panels for detecting, measuring, analyzing, and communicating motion, vibration, multi-dimensional distribution of force, pressure, acceleration and orientation; Operating and evaluating electronic circuits for collecting the operating and load conditions of vehicle parts, vehicle components, vehicle attachments, vehicle accessories in the nature of trailer hitches and vehicle couplings; Electric sensors mountable on vehicle parts, vehicle components, vehicle attachments, vehicle accessories, trailer hitches, and vehicle couplings for detecting the operating and load conditions of vehicle parts, vehicle components, vehicle attachments, vehicle accessories and trailer hitches for vehicles and vehicle couplings; Electric equipment for vehicle parts, vehicle components, vehicle attachments, vehicle accessories, trailer hitches for vehicles and vehicle couplings, namely, wiring harnesses, wire sets, cable sets equipped with electrical sensors and electrical sockets, cable sets equipped without electrical sensors and electrical sockets, and electrical connectors to electrical vehicle systems