Hope I posted this in the right place. I am a older modeler getting back into trains, as my 4yr old is enjoying them as I did. I picked up a older "Chessie System" engine off a used table at our local train shop. Seems to be running nicely and I am sure I will dive further into it and clean/lube it.
My question is if I wanted to add sounds to this engine, what would be the best way? Back when I was a kid there were no sounds on trains so this is new to me. (Below is what it looks like not the actual one, I have it torn apart right now.) I does have the switch on the bottom to turn the track controls on and off.
Thanks in advance for your assistance.