Button And Control Lighting
WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The switch for the heated front seat is lit by a bulb powered from DICE (pin 49, rheostat level). This voltage supplies the buttons and controls, ashtray light and cigarette lighter. For further information see SYSTEM OVERVIEW, BUTTON ILLUMINATION AND LIGHTING FOR CONTROLS .