DO NOT do this, its not done correctly. How to Add an Outdoor Outlet Add an outdoor electrical outlet to get power to where you need it, especially for holiday lights. Do it safely and easily with this simple through-the-wall technique.
How to Install Outdoor Lighting and Outlet Run an underground electrical line into the garden to power an outdoor light or a pond pump. Here’s the quickest and cheapest method for bringing power to a remote spot without tearing up your yard.