Need some help please! Blinker wiring

Hey guys. Any help would be greatly appreciated. So in my 69 valiant the brake lights work great. And my right blinker works great in front a rear. My drivers side blinker when in the on position lights up the drivers side brake light which stays on solid and so does the front. No blinking at all. If that makes any sense please help. This is hopefully my last hurtle so I can get an inspection sticker