I'm feeling a little rusty with my DCC recall and MRC was my least used system when I operated on layouts, but I don't see why you can't give it the same address and control it the way you suggest. Of course, if your E7 consist starts smoking, well...I did I meantion I was a little rusty?
Chip
Building the Rock Ridge Railroad with the slowest construction crew west of the Pecos.
What's so different about your other installations, other than this one won't connect to a motor? No reason why your MRC wouldn't work with a Digitrax decoder, especailly as you have others and they work fine. That's the beauty of DCC, all decoders work with all systems. I don't run ANY Digitrax decoders on my Digitrax system - don't like them.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.