Zmapper... I think the thieves may be more sophisticated or at least creative down here in the desert. Of course that doesn't include the one obvious meth head that got fried. They love to attack the freeways and pull the copper from the lights. Decent bang for the buck.
Back when foreclosed, empty homes seemed as common as occupied ones in some areas it was feast city. It became quite the cottage industry down here. "You mean that wasn't the cleanup/fix-up crew?" "Nope, just your crew of common thieves." Not only wiring but A/C units, plumbing fixtures, lights, appliances, whatever had value.