I'm converting a classic Mini to electric and as a way to save a few thousand bucks, I'm hoping to build a box that can adapt the Nissan Leaf parts to a "normal" system of 12v switches. Specifically ...

[mark] had an interesting idea when looking at all the wiring of a typical 3D printer; Use CAN Bus. There are a lot of wires going to the extruder assembly, and with most designs this thing is flying ...