My friend just a a 93 si and the brake lights dont work. We changed all the bulbs and still nuttin. A friend said if could be the brake relay? idk anyways anyone have a clue on what it could be and how we can fix it or where to go to get a part for it. Thanks.

 

Check the brake light switch, if it goes there are no brake lights at all.

Sorry I don't have any diagnostic procedures.