I was able to add a light to the tower. It's just a press on light. In this dollhouse, it's invisible in the tower roof and just the right size. When you press it, the tower looks lighted. This is great for dollhouses that aren’t electrified and there is a focal point you want lighted. To me it was the tower. You just have to hide it so no one can see it. It's not very aesthetic so hide it well.
Do not glue your tower roof on if you want access to the secret room. Furniture will not fit through the attic entry.
