Should be located close to where your power cord enters the rv. Know thats not any help. May be under a bed or a seat. I dont even think there is a generaly location unless someone has the exact year and model. Good luck and when you find it come back and post. I assume you having problems with it. Most have a fuse on thr back of them.
Just so you know that it can be somewhere you did not think it would be- in my Holiday Rambler, it is on the opposite side of the trailer from the cord for shore power, and behind a cabinet door under a closet, I know this doesn't tell you where YOURS is, but it points out the need to look all over- even unlikely places.