I need a controller for MTH 3 rail and On30- Help, new guy!

[phillyreading]

After reading the discussion here and many other post like this over time, I have to ask: can not the electrical internals of a MTH O engine be replaced with a DCC decoder board? I see that there are many on the market. That way every thing plays together with the Dynamis DCC System.

It might be possible, however you would need a G scale DCC decoder because of current draw(6 amps) with two motors and a smoke generator in the MTH engine.
FYI, about MTH engines; they use D.C can motors, so replacing the DCS command control may work but it could get costly, I can't say for sure about costs as I mainly run what is made by the companies who produce the items and am not into replacing electronics.

Lee F.