need new wiring

Beverley&Ken wrote:
Probably an RV Tech or RV shop that has experience in modifications.
The toilet 12v should not be a problem, just tap into a nearby 12volt line, no special boxes, wiring protection.
The ceiling fan, 120 volt, slightly different story, Power could be obtained by tapping into a 120 receptacle in the bedroom, but concealing (protecting) the wiring up to the location in the ceiling would be much harder, you may have to use a surface mounted wire chase.
The bigger issue would be mounting the 120 v, octagonal electrical box (required to mount a residential ceiling fan), to the RV ceiling would be the biggest problem. A residential electrician, unless he is an RVer, probably wouldn't have a clue on RV construction

Ken

I see a problem or two with this idea. One is that you may over load the 12v circuit and blow the fuse. So maybe a better solution is to see if there is a spare fuse space in your 12v distribution panel and run a new protected circuit for it. And two is that there may already be a 120V circuit at the location you want your fan if you are using the existing vent hole. This 120v circuit would normally be used for the second AC and have a spot marked in the 120v distribution panel with C/B.