Generator Tray Fuse?

[Jeff August]

Hello all!
Today I was going to try and fix the generator tray warning switch
which has not worked since we bought our bus, while removing the screws
I touched both sides and it sparked, when I went to close up the tray
nothing happens at all,I checked the fuses by the main batterys and the
ones in the overhead and they all look good. Does anyone know if there
is a fuse somewhere else or another problem it could be?
Thankyou very much in advance!
Jeff and Michelle August
1980FC35RB
Plymouth Wi.
(with the generator try hanging out for a short time I hope)