Brake lights and hazards not working! Help
I had a left front turn signal issue on 67 cuda. A combination of loose bulkhead connection AND steering column connector with the long (deutsch I think) connectors. My hazard is on dash, while yours is on column. The 3 small Phillips screws(thru plate) hold the switch down.
Also wiring on column underside needs some slack. Double chk all connections before removing that switch. Rabbithole!