Here is what the lights look like...well in the light. :) They have a flat base so it would be no problem to mount them on the wall. I would need to drill a hole to run the lights to the outside. I just need to figure out how to conceal the battery box. I was thinking of creating a drop ceiling underneath the second floor to hide the box or if it were possible to run the lights on a dollhouse lighting system by soldering the wires. I personally have not wired a house yet so? There also is a place on the battery box for an adaptor that goes with the Lemax system, which would mean buying two of those. But I really like the lights and they were cheap after the mark down, I did not want to buy any additional equipment. I just have no clear idea how to use them right now with this dollhouse, because they were just going to be spot lights in the yard. Ideas?