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Basic DCC Wiring for Your Model Railroad
I found this book to be just what I needed as I am new to DCC and do not have a full understanding as of yet. The description on wiring switches was very clear and was exactly what I was looking for, not a real complicated discussion on wiring, just the simple writing on how to do the basic wiring.
Much of this information has been covered in various issues of Model Railroader over the past few years. Having it all in one place, however, is an invaluable resource for those planning the use DCC for the first time.