Brake Light issue on 2002 Mercury Villager

OK this one has be baffled. My brake lights do not work. The third brake light works just fine. The turn signals work as well. The tail lights work. The only thing not working is the brake lights. Any help would be appreciated.

Asked by for the 2002 Mercury Villager
Have you change the brake light switch on the back of the brake pedal Napa part # MPE SL330SB or # ECH SL330 about $8 to $12
3 more answers , 1 more comment
it's in the blinker switch. You have to replace the whole thing.
If your third brake light works when you step on the brake, it is probably not the brake light switch. Have you inspected the bulbs? Some dual-filament bulbs can have a single filament burn out. If the bulbs are ok, look at the condition of the sockets.
I agree with Andy Y, but it does seem odd that both rear brake lights do not work. (Doesn't seem logical that brake light switch is bad, if third light works.)
maybe a be a short in the wiring use a volt meter check for voltage