Basic Question, Toggle switch which rail?

Center rail is the standard, that's considered the "hot" rail.

Yep center rail only,, Lets say  you have a engine parked in the siding with the toggle OFF, If you  decide to park a few cars in the same siding with the toggle controlling the outside rail, the engine is going to fire up each time a car straddles the insulated joint.  With the toggle controlling the center rail the engine stays dead.

Thanks, That's exactly what I thought in retrospect,  DON'T HAVE ANY IDEA WHAT I WAS THINKING ABOUT WHEN I DID THAT!

I just had another idea,  I believe the toggle switches are SPDT, if so any reason I shouldn't take the pos and toggle it across the other set of contacts?  As opposed of rewiring the switch (disconnecting the neg).  That way I wouldn't have to rewire how the LED's are connected.

Thanks

Good idea. 

Actually I was meaning DPDT.  (Too excited about that fix put the wrong designation)

Yes DPDT (I missed it as well) for at least what you already have hooked up. This would save starting over.

Gregg,

Unfortunately it didn't resolve the problem.  Putting the positive on the DPDT switch worked fine, however when I connected it to the layout I still had the same problem.  The owners son wired the layout, and used 12awg 4 conductor romex wire.  He paired the 3 insultated wires together with the bare conductor.  Then used 18awg Gargraves track pins with wire solder to the pin as the power drop.  After I finished reworking the switch, both tracks 2 and 3 were still interconnected.  I talked with the son and he indicated that he did mix a ground wire between the tracks, AND may have mixed power drops between them as well.  That would explain the problem I'm having, and don't see any option other than to check each power drop one by one.  (Going to disconnect them all, then reconnect one at a time, Also going to check track isolation points.  Will do that first.)

Thanks for your comments.

I suggest you color code the wire,if it is not already. saves a lot of mixup and tracing problems. You can buy some roles of colored tape and mark the wires.

There is a reason the hot is switched rather than the common. Many devices, old radios and TVs for example, shared a common ground. if a fuse blew in one of the circuits,the serviceman could still get zapped if he touched the ground accidentally.the metal chassis was the ground and return for most of the circuits.

Dale H