Well, no one has chimed in.
My 98 electric element water heater switch is next to the bathroom sink and is not red (standard old fashioned SPST 120 A/C switch).
The propane hot water switch on the 98 is in the galley area next to the one of the water pump momentary switches.
I think the 92 was the first year of the Eagles, so things changed even in the "vintage years" like my 98.
Give American Coach a call and I bet they will be able to tell you.
1998 American Eagle 40EVS