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how to change underwater pool lights


Author: Poolking - Swimming Pool Equipment Manufacturer


Underwater pool lights add a special element to the pool experience. They make it possible to swim at night and add a unique vibe to any gathering. But, like any other electrical unit, pool lights are prone to malfunctioning and require regular maintenance. Hence, it becomes essential to know how to replace underwater pool lights.

In this article, we'll explore the process of changing underwater pool lights step-by-step. We'll also discuss some handy tips that can make the process easier and safer.

Precautions Before Getting Started

Before diving in and taking on this project, there are a few things to keep in mind:

- Underwater lights run on electricity, so be sure to turn the power off at the circuit breaker before proceeding.

- Water and electricity are a dangerous combination. So, ensure that the lights are completely dry before disconnecting them.

- Before starting any work, be sure to disconnect the power source and ensure that the power is off to avoid any dangerous electrical shocks.

What You'll Need

Here's a list of items that you'll need to change the underwater pool lights:

- A screwdriver

- A pair of pliers

- A replacement bulb

- Waterproof cable connectors

Step-by-Step Guide to Replacing Underwater Pool Lights

Step 1: Turn Off the Power Supply

Before you begin, ensure that the pool light is turned off at the circuit breaker or main switch.

Step 2: Identify the Type of Light You Need

Before purchasing a replacement light, determine the type of light you currently have by identifying the location of the pool light's junction box, which should be connected to the power supply. Once you know the type of light you need, purchase a suitable replacement.

Step 3: Lower the Water Level

Lowering the water level is an important step in the process. Begin by reducing the water level below the light to be replaced. This would usually involve removing water from the pool until it's below the pool light.

Step 4: Remove the Old Pool Light

Using your screwdriver, open the light niche cover and inspect the light fixture. The fixture will most likely be held in place by a few screws. Use the screwdriver to remove the screws and then gently pull the fixture out.

Step 5: Disconnect the Electrical Connections

It's time to disconnect the light fixture's electrical connections. Use pliers to gently pull the wires apart. Avoid using brute force as this could cause damage to the wires and make it more difficult to connect the new light fixture.

Step 6: Install the New Pool Light

Connect the new light fixture's electrical wires to the power supply wires and install it in the niche. Reattach the screws that hold the fixture in place.

Step 7: Test the New Pool Light

Fill the pool back up to its original water level and turn the power supply back on. Test the new light fixture to ensure it works properly.


Replacing underwater pool lights can be a bit tricky, but with proper care and attention, it can be done with ease. By following this step-by-step guide, you can replace your pool light safely and smoothly. Remember to take all the necessary precautions and seek professional assistance where necessary. With new underwater pool lights, you can enjoy a relaxing and unique pool experience all year round.


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