Lights headlights work blinkers work, no brake or running lights

1st thing to check are the bulbs, if ok (good idea to try a new one, sometimes the filament looks ok, but is not connected on one side, difficult to spot), 2nd check for corrosion, powdery deposits, where bulb makes contact w/ socket. If corrosion is present, clean up w'/ fine sandpaper, coat connection point (contacts) w/ dielectric grease to prevent corrosion. If all this checks out ok, take a look at the brake light switch mounted on the brake pedal, it may be shot and would explain no brake lights. Let me know what u find.