81 Chevy Blazer NO Brakes or Turn Signals

I bought a 81 Chevy Blazer (Full Size) and the brakes and all of the turn signals do not work. The flashers in the front work but not in the rear. I know the stop light switch works because I tested it, but now I am lost on what to do. I decided to replace the flasher just for grins and this did not help. Any help would be great.

Have you checked fuses? If the fuses check out, I'd check ground wires.

Sounds like the wire harness plug for the tail lights is unplugged. Do any lights in the rear work?

The tail lights work, but not the brake nor the turn signals. I will look into the ground wire, but I am not sure what else it could be.