from the floor plans i see online i would suspect they are under the foot of the bed as well.
breakers and 12v fuses are in the power center panel. There are other places you will find critical fuses as well.. behind driver side kick panel, behind battery tray, behind kwikee steps, behind thermostat and probably others I will find at some point and time. Oh yeah, there are some fuses in the area behind the power center breaker panel. You have t access them by removing the cover to that area which is under the foot of the bed.