Brake light issues
 

Hello, I have a 2001 Ford Expedition E.B. 5.4 L Triton. My passenger side brake light works, the parking/driving light works, but the turn signal doesn't flash when I use the right turn signal. When the turn signal stopped so did the middle brake light on the tailgate. I've checked all the bulbs none are burnt out. Checked the turn signal fuses, replaced relay, nothing. The left hand works fine, but the passenger side only the front pass, turn signal works but flashes fast. Like the back bulb is burnt out. Any body got any ideas?