Hello Lee,
That makes sense but actually getting up there is a real pita.
I also know that there is an inline fuse between the 7 pin plug out of the ignition inline to the brake light relay. Apparenly it is wrapped up in that huge bundle of wires that runs from the dash to the electrical bay.
As I have brake lights while the engine brake is on I am less worried ,but when I get the coach out of the shop I must spend some time finding this fuse.