I'm buying my wife a led, anti fog mirror for her birthday and it recommends hard wiring to be connected to a wall switch. I don't have access to above or behind the wall in question, what is the best way to hook this up? Run a wire from the light above the mirror? Or try to go around the corner somehow and hook up to the outlet or switch? Any downside to just dropping a wire from the light? Trying to do minimal damage to the wall.