How do you change a tail light bulb in a 1995 Toyota Corolla?
Open trunk, pull back inside carpet. The light assembly is *not* easily accessible, and it's not entirely obvious how to remove the assembly. Here's how:
Remove two bolts under trunk lid, remove one bolt in center of light assembly. Now you are left with two black square posts sticking out on the inside of the trunk. These are *not* posts that need to be pulled through the side of the car to remove the light assembly. Instead, they hold two brackets that receive round posts aligned front/back with the car. So you basically just need to grab the light assembly and pull backwards really hard (it does not need to be pulled left or right, nor rocked - just straight back).
I took a photo of the assembly pulled out, but this wiki doesn't apparently allow inclusion of images (oh well).