I wrapped them, but did not insulate. Railking, their Christmas Dash-8. I didn't get the entire thing back together, and left a few screws out to make sure it worked first. It's entirely possible the black wire shorted. I would guess it's attached to a GPIO on the micro on one end, and the micro voltage on the other end. It probably checks for high/low to see which state it's in. If I did short it, I'm not sure what damage that could have caused, but it's possible. Pretty freak if the ends of that wire contacted the wrong thing as they weren't exposed and were tucked into the wire bundle over the logic board, not really exposed.
Where can I send this for repair? Getting late to make Christmas though, which is a bit upsetting to me. I had such good luck with my other MTH engine.