No electrical box on brick garage exterior lights
I went to replace the light fixtures on the outside of my brick garage today and discovered that there is no electrical box: just the wires through one hole in the mortar and a stud (which the old fixture mounted to) in another. The stud is smaller than the normal size for a light fixture (I have an old ceiling light bracket with a threaded hole in the middle and it slides right over it).
I don't have any way (or desire) to drill through the mortar or bricks. My current plan is to get a pancake box with a hole in the center and clamp down on the stud with a nut, and mount the new fixture to that. But then the light will stick out from the garage a bit and might look kind of stupid. I bought the lights a long time ago and can no longer return them. They also match the ones on the house, so I'd prefer to stick with these lights.
If there's an easier and/or better way, let me know.