???I first like to thank both JWARD & Electrical Whiz Kid for their advice.  I have tried the VOM
and it show power all through my system.  And Yes it is the main line in the middle of my layout
with 2 R Switches on one end and 2 L switches on the other end.  And yes I've replace the main
line with new track,new locomotives and a new transformer, and yet they still die in the middle of
the main line. Any other suggestion, because I'm Stumped?

 ???I'm trying to set up a Lumber Mill Town R.R. Yard but am having problems with the wiring, for the train only run half way up the track then dies.  I've replace several peices and still the same problem?  Any suggestion on what to try next?