When connectying my turnout switch machines to my power supply (MRC Tech II 1500), do I connect them to the "Fixed DC" terminal? 

I understand that "Variable DC" is for powering my track.

Thanks.

So, looking to the wisdom of the masses here for suggestions....  I want to have a visible indication (outside the train room) of when my DCC system is on.  Something plugged in to the power strip that my DCC is plugged into, so I was thinking 120 volts, although a 12 volt light powered by a wall wart plugged into the power strip would work.

I searched on line for a "Power On" sign, but didn't find anything.  Think of signs like "On Air" or similar, like you'd see at a recording studio.

This one has me baffled for the moment. Digitrax system, track that has been running fine, but hasn't been used in a little while due to construction. Right where the gaps are cut separating two power districts, when the locomotive wheels bridge those gaps, it shorts not only those two districts, but the other two on that PM42 as well. Cars with metal wheels pass over just fine. Now, if I manually short rail A,  with two locomotives in the one power district, only one of them shuts down. If I manually short Rail B, both locomotives shut down.

OK, I'm not going to ask which to use for DCC stranded or solid, but a friend of mine gave me a bunch of stranded wire, both 14 and 22 gauge.

I noticed when I stripped the ends, the wire is tinned copper vs. copper. 

Is it OK to use this type of wire for DCC ?

Thanks in advance.

Bill.