AMER1CANMUSCL3

Hey guys I was wondering if I could get a little help. I have a 302 1970 mustang auto tranny, it's a work in progress. I am having an issue with turn signals, brake lights, and hazards. Headlights, tailights, instrument panel and all other lights work fine. I just replaced the turn signal switch, put all new fuses in the fuse panel. Could it be the turn signal and emergency flasher? Faulty wiring? I've been having issues for a while. It started out with the brake lights working every now and then, then they completely stopped working. Any help or information provided would be greatly appreciated! Thanks