Abstract: The trailer electrical connector enclosure may be used for retaining and protecting an electrical connector on towing vehicles. An enclosure may have a first enclosure element and a second enclosure element attached by a fastener. The first enclosure element and the second enclosure element may have a main wall, two side wall elements and a back wall element. The main wall element may have a connector portion, an outwardly expanding portion and a rectangular portion having an open end. A cover may be pivotally attached to a side wall of the enclosure biased by a spring for closure of the open end portions. A clamp pedestal may be attached to an interior surface of the main wall and a back wall may have an aperture.