This traditional stainless steel shore-power inlet has a threaded base for making a watertight seal. When inlet is in use, the threaded base mates to the threaded ring of the watertight cover on the connector body. When not in use, it mates to the threaded self-closing cover. The gasketed, self-closing cover completely shields the interior from the elements when not in use and is watertight when the cover is securely fastened.