I have a 1974 Dodge Dart base model and my rear lights stopped working. I used a test light on the wires to see if they had power running through them and they did. I also changed the bulbs but all rear lights, including reverse lights, still don't work. Any suggestions??

All rear lights?
All of a sudden?
If you have power on all the circuits at the proper time, trace the ground or control side for an open.
Unless it's only brake lights or only tail lights, you have a tough row to hoe, elecrically speaking that is...

Yeah it's the whole back end that's not lighting up even though there's power. I'm having trouble finding my ground and I'm hoping that's just what the problem is.