I look forward to seeing how you do it, Wayne. I like the look of that ten-wheeler...it'd be fun to find one of those.
When my MTH stuff starts to go dark, Sarge as described the process of replacing the electronics with Dallee gear. I'm up for it, just waiting for the locos to fail. I have an MTH 9E that went dark a few years ago...took it to an MTH service center and they did a hard reset to bring it back. Is that even an option anymore? No idea.
Speaking of bringing things back, I found this little cuckoo in the bottom of an estate sale lot I acquired ten months ago:

Despite being in pretty nice cosmetic shape, I couldn't get it to run. Gave it a quick clean with a mini-vac, a touch of clock oil, fiddled with the pendulum, but the best I could do was a run of ~ 30 seconds or so. I had convinced myself that it was likely a Chinese knock-off and seriously considered sending in into the bin. However, I've got this mental flaw that says most things are reparable and deserve a shot. Sarge suggested a shop up near Lancaster, so off it went. They said, nope, it's a German clock, likely tourist-grade, lol; give 'em a few weeks and they'd get it sorted. They called a few weeks ago saying it was ready, and being in Lancaster last Friday for other matters, I swung by the shop at the end of the day and picked it up. It runs great, torments the sleeping dogs, and reminds me of the little cuckoo my grandfather had hanging in his dining room. Unfortunately, it's a one-day runner, so you gotta pull the waits up every day; that's a bit of a PITA.
Anyway, the clock's done, the ZW got a refurb, and the 1688E got a new idler gear, all projects I needed some expert help with. Barely dented the project pile, but we move ahead.