I have bought some LED battery lights for The Arthur dollhouse.
They require no wiring so I can move them around everywhere in the house and they are easy to put on and off. I had not thought of pulling electricity in this house, but now I can actually have lights anyway.Its an incredibly good idea, so now is the problem with wires to electricity in the doll houses over...It is a very cozy glow inside the rooms now, I really like it!