A few days ago I greased the gears and tried to install an electronic e unit, but the board was too big/not the correct shape for this locomotive. I could have cut some parts off the frame, but I decided to get a bluerail Bluetooth board instead as it is much smaller, and should fit. I measured the stall current at 1amp with this motor, so the smaller 2amp board should be fine.
Just to get it rolling, I threw in a bridge rectifier and away we go in forward only - for now. 
