It doesn’t appear that the NCE D13W or the Digitrax DH126D have sound? The Soundtraxx SoundCar does. Cost about $50. If the others have spins and light capability I don’t care about motor control.
Can I take a motor out of an old DC locomotive and mount it in the tug then connect the decoder? If that works, it seems better than connecting and disconnecting the resistor.
Got any pics?UPDATE
Digitrax sound decoder and lights installed. 100 Ohm resistor between the orange and grey. I used decoder pro to set the speed table steps to 2 all the way across which keeps the resistor from heating up. Works great. Even added some marker lights.