Abstract: An electrical control system for a vehicle includes: a plurality of zone controllers each associated with a corresponding physical region of the vehicle, and each having an identical hardware configuration; a high-speed digital communications network interconnecting the plurality of zone controllers; and a plurality of I/O controllers, or sub-zonal or edge controllers, each including a processor and at least one of: an input circuit configured to receive a digital or analog signal from a sensor device, or an output circuit configured to produce and transmit a digital or analog signal to an output device. The plurality of I/O controllers each have a commonized configuration, including an identical enclosure and an identical main circuit board. Different I/O controllers of the plurality of I/O controllers have at least one of: processors having different performance characteristics, or the input circuit or the output circuit having different arrangements of hardware components.