If the lights are just not working, it could be a problem with the outlet or with the wiring. Try plugging something else into the outlet to see if it’s working, and check to make sure all of the wires are plugged in securely. If you’ve determined that it’s a problem with the lights themselves, then you can try fixing them yourself or take them to a professional. If you’re comfortable doing electrical work, then you can try fixing the wires or replacing the light bulbs. If you’re not comfortable doing electrical work, then take them to a professional Christmas light installer who can fix them for you. *The above info was generously provided to us from Get Lit Lighting in Madison WI.