I am new to Model Trains.  My grandson loves them.  We were given a 4-6-0 Set from Bass Pro.  It looks like North Pole set.  We also have Thomas and Percy.  The new set runs the opposite direction on the track.  Is there a way I can change the polarization or something without having to change the connection wire each time?  In other words, can I get them to run the same way in tandem?