The red LED in the panel is showing that the adjacent fuse is blown.
However, in my panel the fuse-holder was poorly soldered in, so I have to wiggle it to get the 'corridor lights' to work. Yeah, I should take it in for a warranty repair, but I never use those lights anyway...
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!