Exact problem I had about 2 1/2 months ago ANd it was the "other" relay that caused my problem. I had 12 volts from of the ignition but "0" at the starter. After a couple of days crawling around, I found an unlabeled relay. Put a known good on in it's place and my problems were over. That relay was in a bay near the back of the coach where my fuel filters were. It was hanging by wires on the back wall of a bay. Wiring went from ignition, to this relay to the starter. I was about to wire a remote switch on mine too and there's nothing wrong with doing that until you can trace it down.
