@Dave Olson posted:We've made a running change to the RSL4 that will make it function on DC. The first engine that will have it is the 2-10-10-2 and then the engines in 2021C2. It wasn't part of our original goal to make it work on DC, so it's nice we were able to get it there.
Bear in mind that on DC power, only Bluetooth is functional. There's no Legacy control or conventional control.
Dave, that's what confuses me. Obviously, you folks know the design a lot better than the unwashed masses out here. 
I would think that under Legacy control, the only thing you need is power and serial data. I don't quite understand why that can't be AC or DC. I don't doubt you have a reason it won't work, just curious as to what it is. 
I'm also missing the battery connection on the RSL4 board, all my new steamers with the RSL4 boards have audio dropouts when crossing my Ross double-slip switches as well as a couple of the curved switches. I managed to fix that problem, but I suspect my fix isn't for everyone as it involves soldering to the RSL4 board.
