Oftentimes, the bulbs that blink on these strands will be marked with red or silver tips. However, if they aren’t marked, plug in the strand, let it warm up, and use a small piece of masking tape to mark each blinking bulb.
If you have trouble removing the bulb and casing, use a screwdriver to pry the light out.
Fold the wires back so they rest against the side of the casing. When you have finished, reinsert the new bulb and casing back into the base.
Once open, remove the contents of the box, including the electrical board and the wires.
For the power cable, peel apart the two sides and separate the first two to three inches of cable. Then strip an inch of wire coating off each side to expose the wires beneath.
If the two sides of the power cable are wrapped around each other, untangle them. Test your lights. Be sure to watch for smoke and sparks, especially where you spliced the wires.
A bridge rectifier will convert the power going to the lights to direct current, meaning they won’t flicker on and off. [5] X Research source You can purchase one at an electronics store or online. Make sure you buy one that matches the voltage of your lights.
When you have finished, slide an inch-long piece of heat shrink over each wire. [6] X Research source
Make a note of which wire is which, and then slide a one-inch long piece of heat shrink over each wire.
When you’ve finished, plug in the lights and test them out.
