Had my Fastrack layout running and decided to convert 4 of the 6 switches to constant power using terminal B on my 150 Watt Type VW.  On 4 of the switches I pulled out the  jumpers and inserted wire onto Aux Ground and Aux In.  Then I reinstalled those switches and tested them, everything worked fine.  Then I connected the rest of the track to the newly rewired switches and applied track power and the transformer indicted a short!  I shut down the track power and again checked the B terminal power and the switches worked fine.  I rechecked everything several times and always the same result, a short and a couple of the sections got hot to the touch.

So my question is could the 2 remaining switches that are on track power be shorting out against the switches on Constant Power?