Hello! I'm brand new to the site. I have a1992 Mustang GT and, upon starting the car, all of the warning lights illuminate brightly then extinguish shortly thereafter. However, as the engine is running, the airbag warning light goes dim and remains on. Sometimes the light will extinguish after 5 minutes. Also, this issue does not occur every single time drive the car. I welcome any advice on what is causing this issue. I want to sell the car but I would like to resolve this airbag warning light issue first. Thanks!!!