There is a 30 amp fuse for each frame mounted slide located within 18 inches of the battery. There were three green pigtail fuse holders located BEHIND the battery box in our 5th wheel. One for each main slide and one for the front landing gear. I replaced all three with auto-resetting 30 amp fuses from AutoZone. DO NOT BREAK OFF THE TABS on the fuses. You will need all three sections to clear the pigtail sides. You will not be able to close the waterproof cap with the new fuses in place, so wrap them with a piece of "splicing tape" or electricians tape.
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW