In my 1994 LY, the 120v circuit breakers are in a panel just to the right of the front of the bed (i.e., rear wall). The 12-volt fuse panel is located just to the left of the passenger seat foot well, on the side of the front console. My LY is the diesel pusher - the location of these panels for the gas version may be different. The chassis buss has a number of circuit breakers - it is located on the outside firewall just in front of the driver.
I should add that there are also circuit breakers in other locations. There is a 50-amp breaker in the front on the firewall. There are also 2 breakers under the kitchen sink, about 1 foot back of the power lock to the exterior side door. There is also an in-line fuse in the power to the front heater/airconditioner blower motor. There may very well be other breakers and fuses.
1987 Excella 32-foot
1999 Dodge Ram 2500HD Diesel