Remove the 2 larger pop out body panels located on the rear on the trunk deck.
Chase down the 2 bolts (10mm) and remove them. One has a plastic clip for a wiring harness on it. Easily removed.
Next, grasp the tail light and pull backwards HARD. There's a plastic clip at the front of the reflector on the side of the car. It's very difficult, and you will feel like its gonna break, but it won't unless you pull sideways at the same time.
The top light is the brake light.
I've seen this written the same way by other ppl, but man, you really have to tug hard.
Here's a picture of the clip.