Yeah, I did it too...oops, what can you say. I had to replace almost every fuse in the MH. There were two 20amp fuses on the CONVERTER (probably hidden in a cabinet...in mine it was behind the kitchen cabinet.) The converter is the thing that gives the MH 12 volt power when your plugged in and may be involved in charging the house batteries. My frig draws of the engine battery and was not affected. All three radios required fuses and most of the fuses in the "house" fuse box were tripped. After I changed my pants, washed my mouth out with soap, and calmed down, changing the fuses fixed all the problems without any permanent damage.
Best of luck, and happy trails.
