Sorry it took so long to see your message-if you haven't been able to get your 2-8-0 running, I'd seriously consider sending it back to Bachmann-they do a great job with repairs, and if you have checked all your connections between the loco and the tender, anything after that will take a bit of expertise to repair. Chances are, the problem is the actual ends of the connectors, as when pulled out without a bit of care it's easy to separate the wires internally. There's a plastic clip on the side/bottom that needs to be gently pried away from the plug (which I then cut off so it's not a problem in the future) and if you didn't know to do that, damage can happen. I know the reason the "catch" is there is the factory way for keeping things together, but unless you treat you trains like Godzilla the connectors will stay together just fine without the clips. It's well worth the cost for mailing and repairs, as purchasing another one will be VERY expensive as they have become rare as hen's teeth. Let us know how you make out.