Thanks Lou,
I don't want to hyjack the thread but suffice it to say that simple things like a step light circuit need much more study than in my last, conventionally wired Bird, thus my confusion, beg pardon for dumb questions. I've had this coach for nearly 4 years and am finally getting a handle on the electrical system. Much more to learn yet. Intellitec Corp, who made the Multiplex system is reportedly working on an iPad interface for all lighting, shades, etc., just when I memorized what all the switch panels do, I won't need them!