I have plenty of cleanup yet to do, but the thing starts with my new setup.
The blue tube-like object is my key. It is a mechanical one, not a wireless one. The two switches are for the accessories and running circuits, respectively. The big blank area is for my radio. It's a tiny, Bluetooth creature with no flange and I haven't yet figured out how to attach it to the console. I'll probably wait for Console Version 2 to do it.
A couple of gadgets on the dash need some debugging, but given my intimate knowledge of the wiring, that should be straightforward. Whether I do those or not, the car is now drivable. I also need to firmly attach the console to the car. It's sitting there loose right now.
The next time I do this, I'll install a debug connector under the dash that will give me output from each wire so I can easily trace faults.
I want to redo the center console. I envision a simpler design, one without all the swoopy bends and ridges. I'll put cup holders in it as well.
Finally, if there is a next time, I will check myself into a local sanitarium as soon as I decide to try this insanity again.