No brake lights with passenger turn signal

[white72c10]

I've tried searching but still not sure. All of the lights on the truck work, headlights, sidemarkers, taillights and blinkers. The problem is when I hit the signal to turn right the blinker flashes but my brake lights no longer work on either side. Turn the blinker off and the brake lights come on. This is pretty frustrating, any help will be greatly appreciated.