I have a 1980 Century Limited turbo sedan (you can see more details about the car in my intro http://www.turbobuick.com/forums/threads/newbie-with-1980-buick-century-limited-turbo-sedan.417777/) and the check engine light is on. It is a 49-state car and I haven't been able to locate a connector to read the codes, and I'm not sure there even is one. Any help on finding the connector or how to read the codes would be appreciated.