1966 C20 Minor Wiring (Brake Lights)

[Hantke]

So i seem to have this ongoing issue with my rear lights. When i first got the truck the lights would blink really really slowly, now when i turn on the left blinker the right tail light goes out, right blinker and "off" don't have any effect. neither of the front blinkers appear to be getting any power either. The wires were cut and i re-attached them with bullet plugs for simplicities sake, and still appear to have no power. any help would be great appreciated! I intend to look into the switch and see if it has any issues or not.