I am having a problem with both my brake lights and blinkers not working but my third brake light does work. Can anyone point me in the right direction with the issue. thanks

 

Have you checked the fuses?

 

Check the MFS and its connectors. The corner stop lamps are not individually fused.

 

Had a similiar problem not too long ago.. Check the wires on the harness. Mine were split above the spare tire.

 

If both corners are out, it would take a simultaneous failure of two circuits to explain the fault. A disconnected or loose connector that is common to both circuits could do it. Odds are better that its a single point of failure, so go with the odds first.