When I substitute LED lights for traditional dollhouse lights I glue the LED down at the light source (head). Then I either tape down the wire to route it out of the dollhouse or I create a divot with my Dremel (rotary) tool. This time I taped. I do not prefer this method. It's neater when I divot a wire route.
I'm a maker and a thinker. I live in a magical world inside my head. To some, I am an artist. I am surely creative. And my creations change as quickly as my mood - so you never know what you're going to get.