Led porch light, and other mounted lights are connected to the electrical system of your home. If you have a porch light is damaged, flickering or not working properly, it is usually not a good idea to try to fix it. Lighting fixtures are inexpensive and easy enough to install the replacement is usually the best method of repair. Make sure you are installing a light that is designed for exterior use.
Cut the old led porch light in the fuse box of the house. Remove the screws that hold the unit to the wall or ceiling. Throw enough to access and disconnect the wires behind it away. Pull the free light.
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Locate the mounting bracket that comes with the new accessory. It will be a flat piece of metal the size of the led porch light base with screw holes in it. Align the holes with the electrical box and fasten the bracket with the screws that come with the new accessory. Pull the wire ends inside the outlet box so you can access them. You must have a cable isolated on white, one black insulated wire and cable bare earth. Wrap the wire around the screw green grounding in the mounting bracket and tighten.