Lost power to a bathroom and bedroom. All other rooms in trailer have power.?

Most likely you have blown a breaker. There should be a breaker in your laundry room or somewhere near there. and look to see if any of the breakers are fliped the other way. That use to happen to me all the time in my trailer and thats what i would have to do.

if your breaker is still working then it might be a short in the wiring. Mice love to chew electric wire. So I suggest you remove the breaker completely just so that no electric can get to the room. Find a frog or some other sort of electrical testing device. One that tels you the volts. Remove the light bulb from the celling light, and the electoral outlets.

Put the breaker back in and test you light where the bulb screws in, and the outlet on both sides. A hardware employee chan show you how, and might be able to tell you if that's a good breaker.

If your breakers bad, no need to check the light or outlets, if it's good, then following the hardware guys power ranges (ask what they should be, since 110 volts is the top power range and trailers are different, he should be able to find it quicker.

If it's a mouse hire an electrician. If it was your breaker it could have shorted out the light and outlet even though they are not suppose to.

Did you remember to check the GFCI outlets OUTSIDE? If someone happened to use an outside outlet for a saw, or other item that pulls several amps (even some shop vacs) then the outside GFCI outlet probably tripped. These outside outlets are often tied into one of the interior circuits.

Another outside GFCI outlet would be the one under the home, near where the main water supply comes up into the home. This one is for heat tape, and is usually on a circuit by itself.

Need more info to get into this further - such as if the home is a single, or double, which bathroom and bedroom, etc. Would also need to know if there has been anything installed recently, such as a wall mount tv, or something attached to the outside. While some wiring may be run through interior walls, a lot of these mobile homes run quite a bit of wiring around the outside walls too. It's easier than you'd think, to shoot a screw, or nail, into a wire.

Double-wide homes will have crossover wires under the home (usually at one end, but I have seen them at both ends, and the middle) - these crossover wires can get yanked or pulled by someone crawling under the home, if they're not aware of them, or they can be gnawed on by critters (squirrels, mice, raccoons, etc).

If you haven't done so yet, try moving each breaker, one at a time, to the off position, and back on. Occasionally, a breaker may trip, and it may not be obvious it has done so. Turning it off, all the way, and then back on, will reset it.

Again, need more info to be of more help. Feel free to email me direct - I've worked on a lot of manufactured homes providing warranty service and remodeling.

Remember, when in doubt call an electrician.

Good Luck