Before You Begin
Before You Begin
Before you begin, since there is a real danger of electrocution, it is essential you correctly identify what circuit breaker powers your pool light and to turn it off. This will ensure that if someone turns the light switch on or an automatic timer switches it on, the light will remain off and safe to work on.
You must also identify how your pool light housing is secured to the pool's wall. Once removed, pool light housings should float to show that they are water tight, so most will have several screws holding them down under the water. Some older style housings will have something called a wedge that is a chunk of plastic that goes against the light housing and the hole in the wall that holds the housing. If your housing uses a wedge, note the position and orientation to make the re-install process easier.
Finally, identify what type of bulb your housing will need. This will minimize the time the housing will spend out of the water when there is a risk of debris getting into it, of electrocution, and of drying out the housing gasket.