Well, today, I installed an MTH Z-1000 in place of my old ZW to power the rails. The ZW will continue to run accessories for now. Not sure why I love the darn thing, but I do.
Anyway, the process of installation (with barrel connector from MTH) caused a hiccup with the TIU. Whodathunk?
But with a can of compressed air and a few Hail Mary's, and I was back in business.
-- Dr Joe