How to Replace Backup Lights and Rear Fog Lights on a Saab 9-3.
ALSO... I bet one of your rear fog lights doesn't work. For some reason Saab only wires up one rear fog light. That makes it look like one of them is burnt out. This video shows how to run a wire from the left fog light to the right one to make the right one work, too. In countries where they drive on the left it's the opposite side (left side) that doesn't work.
Soooo... this video shows how to access and replace the backup lights and rear fogs, and also how to wire up the second fog light so it actually works.