Then connect the second bulb to the socket in the middle of the string.
Easy way to check xmas lights.
Either way you are testing 25 of the 50 bulbs without breaking into a sweat.
Then connect the first bulb to the first socket and repeat the process for the second one.
Check the fuse holiday lights usually have cartridge fuses in a small compartment in the cord plug behind a sliding door.
If the original neon bulb lights move halfway down the remaining part of the set and try again.
Light testers search for the point in the string where the voltage changes between a good bulb with current flowing and a problem area with minimal current.
Easy ways how to fix led christmas lights using a tester led and light keeper pro repair kit tool 16 http amzn to 1r0cgri link supports the channel led.
Learning how to change a fuse in christmas lights is simple but if your strand of lights does not appear to have accessible fuses move on to step 4.
If the other neon bulb lights then the problem is in the first half of the set.
Open the sliding compartment door and remove the fuse s.
If the same neon bulb lights then the problem is in the second half of the set.