Wiring switches between loops

It looks like you have a dead rail, not a short. Remove one of the center rail fiber pins & replace with steel.

Hi Rob

Thank you for the help, when I replace the fiber pin with steel, when throttle up on the inner loop the red light flashes on the zw train does not move but outer loop functions as it should.

Make sure polarities are the same on both loops.

Thank you, how would I check the polarities to make sure they are the same? And how to make them match up?  Again just running off the A and D posts of a zw-l.  Greatly appreciated!

When a train crosses, both loops must be at the same voltage. The rollers on the locomotive connect the 2 loops together.

@charles mcdaniel posted:

Make sure polarities are the same on both loops.

It sounds like you might have black to a center rail. Make sure both loops are red to center.

What John said, make sure post A and D are wired to your center rails.  The U posts to the outside rails.

@C4Guy posted:

...when throttle up on the inner loop the red light flashes on the zw train does not move but outer loop functions as it should.

There is a short on the inner loop.