A swimming pool light assembly for connecting a light to a side wall of a pool where a pool light niche is not provided, said assembly can have an interchangeable light, a watertight connector comprising a first end and a second end operable to deliver at least one of power and control signals to said light through said first end, and a cable with a first end connected to said connector for providing at least one of power from a power source and a control signal from a controller to said light, wherein said light is operable for connecting and disconnecting from said watertight connector while both said connector and said light are submerged in water.