Hello everyone, I'm new to the forum so please bear with me. I wasn't sure where to go with this so I figured this would be the best place to start. I recently bought a few power packs off ebay as part of a group lot. I only needed one of the packs but had to buy everything to get it. One of the things that came in the group was a Bachmann item that I need help identifying. It appears to be a platform. It is about 6"X6" and about 2" high. It is gray simulated brick on the sides and brown simulated brick on top. There is a walkway coming up one side. There is a 5"X 3" X 1/4" riser on top with what appears to be a motor mounted under one end and a hole over it to access the motor shaft. There is a cable coming from the side with two spade connectors and another cable running to a small gray box with a Red button on it and the lettering Bachmann controller. Any help with this would be greatly appreciated. Thanks.