I'll give it a shot.  Thanks, James, for the detailed info and thank you Jonathan & CJ for your replies.

Hey James - we live in FLA too.  Citrus Springs.  That's near Dunnellon and Ocala.

We're brand new to model railroading and are building our first layout.  My wife purchased an N scale Chessie (she likes cats) engine 15-20 years ago and it's just been sitting in the attic.  I put it on the track and it lights up but doesn't move.  Is there a way to take it apart and try to fix whatever is wrong?