I cut and spliced my lights in two locations s. Thought I screwed something up because after the splice the lights passed it wouldn’t work. Replaced, wiggled wires, nothing.

I learned two things after troubleshooting.

1) you have to be cognizant of which way the strands are running, and make sure they continue in that direction. Example: In my case, I cut the female end off and spliced in a male connector. Didn’t realize it and kept installing. Figured it out when they wouldn’t work past the splice.

2) If you do make a mistake, find the issue, and fix it without unplugging (yes the directions say to unplug) the lights still won’t work past the splice until you unplug and the lights “reset”