How to Replace Christmas Light Fuses

First, unplug the light strand from the outlet and locate the fuses in the plug (there should be two fuses). You’ll see a little door on the plug that says “Open.” Use a utility knife or screwdriver to open the door and expose the fuses.

With your utility knife or screwdriver, pry the fuses out of the plug. These fuses are small glass capsules that fit in tight, so be careful getting them out.

Before replacing the fuses, you should confirm they are the source of the problem. Do this by checking if the center of the fuses are still together.

Once you’ve confirmed the fuses need replacing, make sure to change them both out by pushing the replacement fuses into place with a utility knife or screwdriver. Take care not to break the new fuses when putting them in.