Completing 1968 Dart long time project. Trouble shooting electrical issues. Read carefully, I have no brake light on left side of car when pedal depressed. All lights and turn signals work properly. Checked all wires for continuity before putting back into car. I checked and tried all the following:
1) Tested continuity on all wires leading to left taillight. This includes everything from turn signal switch to taillight including grounds. Tested ok
2) Checked continuity inside turn signal switch. Tested ok
3) Tried running ground wire to taillight socket. Didn't work.
4) Switched bulb from right side. Bulb good, still no brake light.
I'm lost on what to check. Any ideas. All wires check good. Only two wires at socket. Green wire ending at turn switch, and black ground.