A lighting device mounting system for a dishwasher, and an associated apparatus and method, are provided, comprising a lighting device having a first portion disposed within a dishwasher tub portion and configured to emit light therefrom. The first portion has a larger lateral area than a receiving aperture defined by a tub wall of the tub portion. The lighting device includes a second portion engaged with the first portion, and adapted to extend through the receiving aperture. The second portion includes at least one laterally-extending flange extending laterally outward therefrom. A securing device having a medial hinge portion and an engageable locking mechanism associated with free opposing ends, is configured to interact with the second portion, opposite the tub wall from the first portion, and between the at least one laterally extending flange and the tub wall, so as to secure the lighting device to the tub wall.