Front compartment on left side. It should be mounted up and behind hydraulic tank on outer wall. I believe these are made by Bussman. It should have two threaded posts sticking out.
I would caution that it may be wired ahead of disconnect switch. You may want to disconnect battery before servicing.
It may or may not be an auto reset. Might be a manual push button reset. According to the Lippert manual this is "provided" by installer.
Doug & Tiffany
2016 F-350 Platinum DRW
2010 Harley Davidson FLHTK (Ultra Limited)
2015 Voltage 3605