ok, thanks, I see MRC has a universal sound board and they said that it will work if it has a 8 or 9 pin plug, sounds like it will work

chessie EMD GP40 model #60309 or EMD GP7 model #62403

I am looking at getting a Chessie emd w/dcc onboard. Am I able to add sound to it?

yeah, that's what i'm thinking of doing

thanks guys, I wanted to get some opinions first before trying and damaging the loco. The wiring and all I have no problem with. I can solder, connect and do all that stuff. I do want to build a dcc system and wanted to try and incoporate the old loco's into that system but guess i'll try and figure a different way of using them.

ok, thanks I don't have the paperwork for it and I can't find any model or serial numbers on it. Also i'm new to this and don't know what the wheel config would be classified as. All I can tell you is  that it has 2 axles in the front and 2 drive axles in the rear. the only numbers I can find is painted on the side of the chassie 10822

I just inherited my grandfathers old Bachmann trains he used to run during Christmas. Only one is still working. Can I convert it to DCC? the Train is an old Chessie about 25-30 yrs old. I have seen on other boards that you can but the guy at the local train shop said no.