Forget about checking the bulbs. They're lit up so you know they're working. Same with the wiring. It's working. In this case what isn't working properly is the brake light switch. You may be able to prove it by pulling up on the brake pedal. If the lights go out there's one of two things that has happened. The switch could be loose and is out of adjustment, or there was a rubber cap on the end of the plunger that fell off. Look around on the floor for that part.
Saturday, November 2nd, 2013 AT 2:15 PM