My son's Saturn tail light assembly - brake lights have stopped working, I have checked the bulbs and they are good. The third (center) brake light still works. I am unable to find an electrical wiring diagram to try and trace this down. I am assuming that one wire runs from the brake light switch to the rear, but have been unable to verify that.
Help??!!

post what model and year the car is and I can help you out with the wiring diagram, or you can simply buy a Haynes Repair Manual for the S-series, from Auto-Zone or a similar parts store, it has a wiring diagram in the back and is great for all sorts of other problems...