All the lights are on the same circuit so if the high-mount light works, you know the fuse and switch are okay. Pull one of the tail light assemblies and measure the voltage on the white / tan wire while a helper presses the brake pedal. If you find voltage there, suspect a bad ground wire but that would affect the backup lights, signals, and tail lights too.
Did you check the brake light bulbs?
Apr 14, 2012 at 9:11 PM