patternpilot posted:...The wiring is as shown in the DCS Companion book, all home run type.
If you followed the book, I imagine you did all this...but isolating the center rails between blocks is important and even more important would be isolating the variable 1 section from the variable 2 section.
See the links Engineer Joe posted above about the inaccurate voltage readings. I think this has been an ongoing problem.