2015 Impreza, Fog tail light

[jeffflan]

My 2015 Impreza has a low off square, cut out in the rear bumper, with a neat matching plastic plug. It has been suggested to me that the cut out may be used in European models, to fit a rear fog/stop light.

If true, are the fog/stop lights available to purchase (after market) ?

Suggest an on-line supplier, approx cost ?

What wiring is standard ? Guess it is wired to brake lights. Separate fuse maybe.

Suggestions please

Don't waste a day !