where is the fuse on christmas lights

The fuse on Christmas lights is typically located on the cord that connects the lights to the power source. To find the fuse, you'll need to carefully examine the cord and locate a small plastic cover that covers the fuse. The fuse is usually a small, cylindrical object that is inserted into the cord. Once you've located the fuse, simply pull it out and replace it with a new one of the same size and amperage.