Hello, I have a Bachmann 4-8-4 "Freedom Train" that has a non-sound DCC decoder. I would like to add sound to it. The decoder has an 8-pin NMRA plug. I'm trying to figure out what would be an appropriate sound decoder to add to it. For instance, the Digitrax SDN144PS decoder has an 8-pin plug. Is it just as easy as matching the number of pins in the plugs? It looks to me like this would work but is there something I'm missing or other issues to consider for compatibility? I'd appreciate any hints or guidance on what would be an appropriate sound decoder for this locomotiive.
Thanks for any help you can offer.
Michael