i am not laughing at you, only with you
I have some schematics i managed to get before thor took complete control
mine do not show the system either, BUT
i have the same switch set up
i will say that power to the panel is supplied in or at the electronics interface from f/l in the forward left bay on the tuscany..the BCC area, you may look at your BCC and power bay to check the fuse.
if the light is one...you got power,
the wires on the valve are not exactly environment protected, i had one rust/corrode off a while back, at the tank valve assembly.
hope it helps
USN Retired, Life time member of the DAV.
Enjoying the 2008 Damon Tuscany 4056, #3998 no your eyes are fine, there are really 6 slides
2022 F150 King Ranch or 2012 Edge toads