A modular light assembly is provided. The light assembly includes a light housing with sides, an electrical light source inside the housing and connected to a connector on at least one side of the housing, and a pin for pivotally, electrically and detachably connecting the side with the connector to a side of another housing having the connector. The connector includes a quarter turn receptacle set into a dielectric medium, which is surrounded by a conductive metal ring. The electrical light source may be a plurality of LED lamps connected to a printed circuit board, which is connected to the connector. The light assembly may also be connected to other electrical and non-electrical devices having a connector.