I've disassembled many a train but this might be a 1st of a GG-1 if necessary. Just thought I'd put it out there and ask beforehand. Thanks for both suggestions.

So I'm guessing that I'll have to partially disassemble the GG-1 engine to get to that speaker wire and disconnect it to mute sounds?

I am running this Bachmann GG-1 #4935 Engine strictly on DC and wish to turn OFF the Sound coming from the engine. Is this possible without taking the engine apart to get to the internal workings of the engine? I am using an old DC ONLY Railpower 1370 Controller/Transformer.