Brett,
You seem to have solved a few issues here. I have a 99 Rexhall Aerbus with the coach chassis battery disconnect switches that for some reason act up sporadically. In the two years I have the coach it happens at the worst times according to the book on the battery switches I can bypass the relay by moving the hot leads to the battery side of the relay. But the panel is a little different the the diagram shown in the book. Have you heard of changing the relay/fuse panel and moving the red leads on the coach relay only to the opposite side of the relay to bypass?
Thanks,
Rob