WARNING: This page is about a different car, the 2001 Saab 9-3 and 2000 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Manual A/C-Heater System Wiring Diagram (2000 9-3)
Fig 2: Manual A/C-Heater System Wiring Diagram (2001 9-3)