When the left or right blinker is on, both the taillights flash. When the brake is applied while the blinker is on, the blinkers stop and they're dimly lit on the cluster. It just happen driving down the road, nothing unusual. Simple fix or should I start hunting for bad wires? Thanks guys
EDIT: hazards work as they should on a four corners of the truck
EDIT: hazards work as they should on a four corners of the truck