When I came back to the model next morning, what hit me first was that the concept was complete! And, if so, that meant it was time to detail this baby!
Designing the transformer and power center (Control Center) and routing all the myriad wires to terminals . . . well, it required investigation first and then again and again. In fact, it required two fully functional tracks with spurs and switches on two levels. My train magazines helped, but I needed the internet, too.