How to Make a 12V Blinking Light Circuit

Written by stephen benham
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How to Make a 12V Blinking Light Circuit
Replace one bulb with a blinking bulb to get a blinking light circuit. (Brand X Pictures/Brand X Pictures/Getty Images)

Blinking or flashing lights can provide a decorative effect. They're great at parties or outdoor functions. A blinking light circuit operates by repeatedly stopping and then starting the flow of electricity though the circuit. The easiest way to make a 12 volt blinking light circuit is to use existing 12 volt static strings lights and convert them so they blink.

Skill level:

Things you need

  • Flashing light bulb

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  1. 1

    Put the static string light circuit that you want to make blink onto a table. Find the first light bulb that's nearest to the 12 volt power source.

  2. 2

    Remove the light bulb nearest the power source. Either pull it out using your fingers, or, if the bulb screws into the light bulb holder, unscrew and remove it.

  3. 3

    Take along the bulb you removed to an electrical store so you can get one the same size and type, but ensure it blinks.

  4. 4

    Put a blinking light bulb into the light bulb holder. Either push it in place or screw it in.

  5. 5

    Turn on your light circuit. The blinking light turns the flow of electricity on and off in the circuit, so all the lights blink.

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