1967 Mustang Brake Light Problem

A few days ago I replaced my steering wheel rag joint, my tail lights were working before then. Now the tail lights seem to be connected to the emergency flashers because when I have the flashers on the lights on my dashboard light up(constantly when pressed flash when not pressed) but not the tail lights(in either situation). I have voltage go through when the flashers are on but not when they're off. I replaced the brake light switch a week before I replaced the rag joint, so I don't think it's that. I also checked all fuses.

Thank you in advanced, if this wasn't clear I'll try to explain another way.