A couple more weeks have passed, and the power supply bus wiring is done! I've now got the main track bus and three other bus-pairs wired to each of 7 barrier-strip panels scattered around the layout. I've been running trains forwards and backwards along the existing track, checking for problems, but haven't found any yet. And, w/the wiring done for the moment, I'm back to laying track: the hidden staging tracks for McPhee are completed, and I'm working on laying out the turnouts and other track at the southern end of Dolores.