Ground up restoration, just now testing the signals for the first time....here are the symptoms.

1. When depressing brake pedal, only the left light displays.
2. The left turn signal was working at first, but now has quit.
3. The right turn signal does not work.
4. The flashers do work at all 4 corners.
5. I get a solid light when I test the circuit at the rear for each turn signal.

I have installed a new flasher.

Any help is appreciated.

Update...I found some grounding issues in the sockets, I now have brake lights and turn signals working, however, I have no taillights? Any Ideas?

I have no taillights? Any Ideas?
Check tail light fuse?

Fuse is good, I have a signal at the grommet where the brown wire goes into the rear bumper harness....1971.