Abstract: The invention relates to an electrical system or circuit for a by-wire control system. The control system includes a hydraulic pump, a reservoir, a bi-directional function actuator, and solenoid operated valves for controlling the actuator in response to control signals from the electronic system. The electronic system includes first and second pairs of command device position sensors, a first channel and a second channel. Each channel includes main processing unit and a supervisory control unit. Each main processing unit is connected to a pair of the command device position sensors, and a pair of the solenoid operated valves.