If your Christmas lights are only half lit, there are a few possible causes and solutions to consider. Here are some common issues and steps to troubleshoot the problem:
1. Check the fuse or breaker box: If your Christmas lights are connected to a circuit breaker or fuse box, it's possible that the problem could be caused by a blown fuse or tripped breaker. Check these components and replace the fuse or reset the breaker, as necessary.
2. Check the wiring: Check the wiring of your Christmas lights for any loose connections, frayed wires, or damaged sockets. If you find any issues, repair or replace the wiring as necessary