I read somewhere ??? that you could use ac light fixtures with a dc 12 volt bulb to have a wider assortment of fixtures. I bought this fixture at Lowes, wired it to my 12v battery, added the 7w 12v bulb and had light. Put it on the wall to have instant back up light when the power goes off. I have since read that ac switches aren't appropriate for dc application. The switch on this is the one that came on the light. Am I being too cautious or is this an accident /arc-ing /fire waiting to happen?