how to check christmas lights with multimeter

To check if your Christmas lights are working properly, you can use a multimeter. First, make sure the power is turned off to the lights, then disconnect the lights from the power source. Next, set the multimeter to measure resistance, and touch the probes to the two ends of the wires that connect the lights to the power source. If the multimeter shows no resistance, then the lights are not working properly. If there is resistance, then the lights are working properly.