need new wiring

Any can do the work if they know how an RV works. Not a big deal until it is....

What is it you have in mind......120V AC, 12V DC, Solar etc
Details will get better responses

New wiring for WHAT?

Seen 'electricians' screw up 30A for RVs and seen 'techs' that didn't have a clue about using a voltmeter

i doubt a,rv tech will do it as it is,altering factory specs

Either should be able to do it. A residential electrician may not want to work on an RV especially if your looking for low voltage wiring.