Lucy,
Take a look at page 4 in this link.There, you will see a picture of what one of these mini-breakers look like and a picture of what the breaker buss looks like. That row of breakers with the red caps on it is what you're looking for.
Look for this row of breakers in either your hydraulics cabinet (door side cabinet door) or your generator cabinet (front most door - under the overhang).
Jim & Nancy and Emme (the Yorkie)
2015 Heartland Landmark 365 Ashland
2012 Ford F450 Lariat Ultimate with Classy Chassis Aluminum Hauler bed