Modifying the RailKing Rotary Snowplow

IF I Recall correctly, This is one of the cars that really needs the choke in the power line to keep it from mangling the DCS signal.

I say that but I have one and don't recall it causing issues on my layout.

Then again I don't run it much since I want to add some sort of remote control to the spinning of the blades the same as you want.

It is a great piece.  Some sort of "e-unit" might work with motor inside.  Guess the question is whether you want to use it in Conv., DCS or TMCC/L?

Comments:  This modification is intended for "conventional" operation since the cost to add DCS or TMCC control is not cost effective.  However MTH could probably add this capability for DCS at a lower cost and complexity with a custom circuit board. Adding sound also would be a plus.

Adding a battery in the car to power the motor might reduce the possibility of interference with the DCS signal on the track.

True, But a Choke is $0.15 and never goes dead.

Adding a TMCC control to it will eliminate the issue as well.

DCS would be cost prohibitive but since I only need on/off a simple TMCC board is not too pricey.

Depending on the amp draw which I can't imagine is much, a small lithium polymer battery with a simple charge circuit to charge from rail power would probably work. This way, anytime it sits on a powered track it would charge.  You can obtain 12 volt low amp hour packs which would suffice.