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How Are Swimming Pool Lights Wired? Swimming pool lights are a great addition to any pool, providing ambiance and visibility for nighttime swimming. However, many people have questions about how to wire these lights safely, especially since they are installed underwater. In this article, we will guide you through the process of wiring swimming pool lights, covering different types of lights and commonly asked questions. Wiring 12V Swimming Pool Lights Wiring 12-volt swimming pool lights is relatively straightforward. Whether your lights are 12 volts or 120 volts, they will come with sealed cables that are waterproof. You do not need to work with the wires attached to the lights themselves. Instead, feed the cable through the existing conduit or drilling you have done for the installation, and run it to the location where you want to wire it. >>> Read more: Pool Light Repair Tips for a Quick Fix Most swimming pool lights have a junction box. You will need to run the ...