How to fix Christmas tree lights in series?
December 9, 2008 8:01 AM Subscribe
I have a Christmas tree with lots of lights on it. The lights are wired in series and are currently not working. So somewhere on this set of lights one or more lights are not functioning. It is a major pain, swapping bulbs for known good ones or peering into each and every bulb with a torch to see if you can spot whether the filiment is still there. What is the easiest way to find the non functioning bulbs and get the lights working again?