Good electrical techs near Boise?

A fellow I know is having some difficulties with his fifth wheel electrical service -- from "long distance," it sounds as though he may have a fair bit of leakage in his 12-volt system. OK, more than a fair bit. He lives in the Boise, Idaho area and has been two a couple of different RV repair outfits, both of which "can't find anything wrong."

Anybody have a recommendation for a good troubleshooter out that way? I thought about maybe he might do better with a shop that specifically deals with electrical issues, but I know nothing of anyone's reputation up that way.

Thanks!