A long, long time ago there was a great Design Idea for a simple gadget to find a bad bulb in a series-connected string of Christmas lights: This is really simple and works great, but it exposes the ...

All it takes is one bad bulb to keep all of the other Christmas lights from lighting up. The trouble is, how do you find that one bad bulb? This gadget is supposed to help you find it. A bad bulb ...

Nothing ruins the excitement of decorating for the holidays quite like a malfunctioning string of lights. I’ve definitely made the mistake of putting a string of light on the tree or hanging them ...