Here's another option.
It sounds like the same sound scheme used in the BLI HO GG1 (which would make sense, they're both LokSound). I found that I had to turn down the blower fan sounds to get a more realistic balance, but you get horn, bells, steam generator, relays, electrical arcing from the pantographs, and other background noises. Of course, the most interesting sounds to most people are probably going to be the horn and bell.