If you're having trouble opening the fuse on your Christmas lights, here are a few tips. First, make sure you're using the correct tool for the job. Some fuses require a specific tool to open them, while others can be opened with a pair of pliers or a screwdriver. If you're using the wrong tool, you could damage the fuse or the lights. Next, be sure to follow the instructions on the packaging. Some fuses have specific instructions on how to open them, and it's important to follow these instructions carefully.