I am installing a Camera system, 2 story house, However I need to install one of the cameras on an exterior wall on the inside of the house. I have no way to gain access to the attic space at the wall. My question is, is there a way to mount this camera any way and fish the wire up to the attic without removing sheetrock or will I need to drill all the way through the outside of the house and go up through the eaves that way. By the way the location of the camera is on a one story side of the house. So there is attic space above wall.