There’s no worse thing when decorating for Christmas when a bulb goes out. When the bulb goes out, most of the string goes out too. If a bulb goes out, there’s an easy fix. Find the replacement bulb you need and switch out the two lights. You will be all set to go! Don’t waste an entire string of lights just because one bulb goes out. Simply find the replacement bulb you need and switch the two out. You’ll be all set.