how to make my christmas lights flash

To make your Christmas lights flash, you need to follow these simple steps: 1. Plug your Christmas lights into an outlet. 2. Look for a switch on the string of lights. This is usually located on the plug end of the cord. 3. Switch the lights on and test them to make sure they're working properly. 4. Look for a button or switch on the lights that allows you to change the lighting effects. This may be located on the plug end of the cord or on the light bulb itself. 5. Toggle the switch or press the button to change the lighting effects until you find the one