Maybe I'm a little late to the party but I just ran across an absolutely fantastic site which should answer any questions you have or have had about DCC (especially wiring issues) ...... my hats off to Brian Lambert for a fantastic and fully instructional site: http://www.Brian-lambert.co.uk/
Thanks. I will look at it. For some time I have been following Bruce Pertrarca, Mr DCC, the former owner of Litchfield Station, an online DCC company. He regularly updates his material. http://mrdccu.com/ Rich