So I learned some more about the Motogadget system today.
The use an anology, the system is similar to a traditional desktop computer. The M-Unit is the tower, the M-Switchs are the keyboard inputs, the M-Button issue a daughter card (remember those?).
When an M-Switch button is pressed it sends a binary signal to the M-Unit. The M-Unit in turn tells whatever it is to do something. The signals are a negative signal! Once I learned that the simplified wiring all made sense. As a result large wires aren't needed like a traditional electoral system. Granted, the main power system, battery, alternator, stater, etc, all need to be traditionally sized. Other things can be smaller, horn, turn signals etc.
Motogadget is currently working in a Bluetooth based system that can be set up via a smart phone. Pretty cool.