Hello King, mind if I call you dan???
OK, first let's have a lesson in electric in an RV.
In most RVs the lights are 12v. (Unless someone with an 04 Cardinal posts here
and says I'm wrong?)
A- the lights are not connected in any way to any outlets GFI or not.
B- the lights are on fuses not circuit breakers (12v stuff are generally on
fuses and 120v items are on circuit breakers)
C- if you've checked fuses with a meter and know they are good, it's time
to dig deeper. If I were you, I'd remove the light fixture and check the
wire connections at the rear. You're looking for a loose connection.
Next pull the switch and check for loose wires behind it and don't forget
to check for loose wires behind the storage light too.
It's a treasure hunt and it's up to you or a dealer to find the loose
Good luck and welcome to Forest River Forums!
Please post back and tell us what you found, we'd love to know how this turns out.
Dan & Rita D
2004 5.3L Silverado 1500 ext. cab 2WD
1999 Suzuki Intruder Motorcycle
Blue Ox WD hitch, AirLift load levelers
Camping days 2010-53, 2011-47, 2012-41,
2013-41, 2014-31, 2015-40, 2016-38