My right turn signal on my dash was blinking really fast so I checked my turn signals and found the rear right signal is not coming on. When the brakes are applied, all the lights are on. The front blinkers are fine and the rear left signal works fine. It’s just the rear right signal. I cannot figure out why since all the lights work when the brakes are applied. I checked the plug and it’s fine. Wiring looks fine. Any ideas?