My brake light will not work on the right side brake, why?

What is your question?

My brake light has been replaced, I've checked the wires and the connections all look fine. When I turn on my lights all the lights come on, when I press on the brakes the brake light on the rightside goes out. I don't understand it, I am trying to fix it myself because if I go to the dealership they'll see me a just a woman who knows no better and want to charge me some crazy price for something that might be simple to fix.