If the fixtures are still decent, just switch over to LED bulbs. 1/10 the power needed over incandescents and very little heat generated. I replaced a bunch of halogens that I measured to be in the 200 degree range. LED's are in the 120 range.
My biggest issue is that I got water in one of the lights, it still works fine but on a cruise I popped the cover off not realizing that the surround and lens were separates. When I flicked the water out the lens went with it! I haven't been able to find the original lights to buy a lens so now I'm looking for alternatives.
As for the Lower Courtesy lights, 2 of them are cracked so I'm going to modernize them a little.
Have any of you changed the lower Courtesy lights? I have a broken one and can't find a match for it. The scew holes are 3inch apart and I'm struggling to find a match or something which is flush mountable and slightly larger so that I can cover up the existing screws.
I had looked them up and they are still available and inexpensive they also offer the same light in LED.
I don't remember where I found it but if you unscrew the light the brand and model number is on the back Google it and it will come up. That is how I found it I just never followed through.