According to one embodiment, an ultraviolet light system includes an ultraviolet light source configured to be coupled inside of a ventilation hood plenum, and a light power module. The light power module includes a base configured to be coupled to an outside surface of a wall of the plenum, and further includes a light connector. The light connector is configured to extend into the inside of the plenum through the wall. The ultraviolet light source further includes a light wire positionable entirely within the plenum. The light wire has a first end configured to be coupled to the ultraviolet light source, and a second end that is configured to be coupled to the light connector.