Firm ride light flashing on 1993 Ford Thunderbird

Firm ride light started flashing and my steering got extremely tight. I've never had the firm ride on so I don't know if that's how its supposed to feel. But after it came on the car would pull left and then went away. Now when I turn hard like to turn in my drive way there was a clunk in the steering wheel. The anti lock break light is also on constantly. Its a joy to drive when working properly but lately its become a money pit

Asked by for the 1993 Ford Thunderbird
Never new those cars had that light , if u like the car u can goggle that problem ,sounds like a sensor on the steering system .