Abstract: A microprocessor based interengageable engine generator set control device that provides bi-directional communication and control via a common J1939 protocol of electronic engine control units. Such engine control units provide critical engine information and control using manufacturers proprietarycodes that are readable by the interface engine controller. Engine commands are issued by programmable software and operational input in response to information received and analyzed thereby.

Abstract: A digital readout device for use in a motor vehicle having a manually adjustable channel-indicating control mounted in accessible relationship to the vehicle operator. A digital display device is remotely positioned from the control interiorally of the vehicle and has a two digit illuminated panel. The panel is affixed to an interior vehicle surface adjacent a vehicle window so that it will face outwardly of the vehicle and be visible to persons exteriorally of the vehicle and in particular to operators of vehicles in the near vicinity. A flat wire connector having a connectable harness intermediately thereof provides electrical communication between the control and the display device. The construction of the control and display devices each include an extruded channel structure.