I replaced ours with a brighter light on a swivel mounting that gives more light out where you want it. Only the top around needs to be "flat" so rain water doesn't get down in behind it. (For aluminum siding issues).
You just use the 12v wires for the OEM light for the new one. Use new holes to screw it on.
In our case the dog portable fenced-in area outside the door was not lit up well by the OEM light, so you couldn't see if they did their business or not at night before bedtime. Now you can see what they are doing from the window.