A portable system for testing or demonstrating an agricultural implement, the system comprising a case , the case carrying: a power supply ; a plurality of electrical couplers configured to receive wiring harnesses associated with test devices of the agricultural implement a simulator module configured to simulate at least one operating parameter of the agricultural implement on which test devices of the agricultural implement are carried; and a control system comprising: a graphical user interface ; and processing circuitry operably electrically coupled to the graphical user interface and to the wiring harnesses, the processing circuitry configured to monitor and display information pertaining to operation of the test devices of the agricultural implement, characterized in that : the simulator module is configured to send simulated data to the control system to indicate GPS location, radar speed, implement height status and/or gyro turn rate; and the control system is configured to operate the test devices of the agricultural implement as though they are travelling through a field and thereby evaluate the test devices of the agricultural implement without moving them. a power supply ; a plurality of electrical couplers configured to receive wiring harnesses associated with test devices of the agricultural implement a simulator module configured to simulate at least one operating parameter of the agricultural implement on which test devices of the agricultural implement are carried; and a control system comprising: a graphical user interface ; and processing circuitry operably electrically coupled to the graphical user interface and to the wiring harnesses, the processing circuitry configured to monitor and display information pertaining to operation of the test devices of the agricultural implement, characterized in that : the simulator module is configured to send simulated data to the control system to indicate GPS location, radar speed, implement height status and/or gyro turn rate; and the control system is configured to operate the test devices of the agricultural implement as though they are travelling through a field and thereby evaluate the test devices of the agricultural implement without moving them. a graphical user interface ; and processing circuitry operably electrically coupled to the graphical user interface and to the wiring harnesses, the processing circuitry configured to monitor and display information pertaining to operation of the test devices of the agricultural implement, characterized in that : the simulator module is configured to send simulated data to the control system to indicate GPS location, radar speed, implement height status and/or gyro turn rate; and the control system is configured to operate the test devices of the agricultural implement as though they are travelling through a field and thereby evaluate the test devices of the agricultural implement without moving them. the simulator module is configured to send simulated data to the control system to indicate GPS location, radar speed, implement height status and/or gyro turn rate; and the control system is configured to operate the test devices of the agricultural implement as though they are travelling through a field and thereby evaluate the test devices of the agricultural implement without moving them. <EOS>