There is provided a light fixture comprising a light source. The light source has a housing terminating in a first end, and the housing has a housing connector proximate the first end. The housing also has a heat sink disposed inside the housing and a light emitter disposed inside the housing. The light emitter is positioned to allow a light emitted by the light emitter to exit the housing through the first end. The light source also has a connector in electrical communication with the light emitter. The housing connector is configured for reversibly securing the light source to one or more of: an adaptor reversibly securable to a trim configured for securing the light fixture to a substrate, and the trim.