I replaced my bulbs with LED ones and it was as simple as Ed describes. Only takes a couple of minutes, all done from the outside. They're very similar to many of the interior lights. One of the easiest ways is to cover a flat screwdriver end with tape, so that it doesn't scratch the paint when you pop them out. There are a couple of squeeze tabs on the long ends of the lens that hold it in place. Once you've replaced the bulb, the fixture just pops back in. I recommend testing it before popping it back in as LED bulbs are polarity sensitive.