My brake light is staying on and I can't​figure out why when I applie my rear brakes I hear a buzz noise any awnsers

 

You might check the wires under the rear fender, sometimes they get knocked out of their clips and rub on the rear tire.

 

I don't have an answer for the buzzing, but the front brake switch goes off when the button is pressed, so if the lever isn't holding it down fully, the brake light will stay on. Just something to check, especially if you've had the right lever off or loosened.