Our '99 has 3 fuses; 2 near the isolator and 1 above the batteries. The holder for the refridgerator was a really cheap assembly and it went bad (disintegrated) on mine last year. It was hard to find because it was inside a split ribbed type cover. I replaced it with an ATC fuse and weather-tight holder (available at almost any auto parts store). If I remember correctly, it was a 25 Amp fuse.
If you want, I can look at the schematic and give the specific rating.
Also, I don't care for crimp-on type connectors in areas exposed to weather so I soldered it into the line.
Bob (Squidly Down Under) & Peg - 2013 Ford Focus pushing a 2011 Phoenix Cruiser 2552S
"In God we trust" to preserve our country and bring our Troops safely home.
Carry on, regardless..................