Rear turn signals not working

For reference, i have a 2003 Escape,V6, 4WD. It started with the left rear, but now neither rear turn signal works. I have all other lights- brake, parking, back-up, etc. The signals flash fast, and the fronts are working. I replaced bulbs and checked sockets and all wiring I could see. I used a test light and found no power to those sockets. I would have thought fuse, but the front signal bulbs are working. What am I missing, guys?