In a grain cart having an auger fold actuator, a gate actuator, and at least one spout actuator, a grain cart control system has an input device received within an operator cab to generate command signals responsive to operator commands, an electronic controller operatively associated with selected actuators of the grain cart, a valve actuator connected to each valve of the selected actuators of the grain cart, and stored programmable criteria to generate activation signals for the valve actuators in response to the command signals. Each mechanical function that is controlled also has a rotary potentiometer for positional feedback. To actuate any sequence, a joystick will send commands to the controller to activate a sequence. Since the controls according to the present invention are driven by a logic-based controller, various functions can be automated.