Lighting System: Notes
WARNING: This page is about a different car, the 1990 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
The distributed lighting system consists of nine output switching modules (OSM's), the BCM and the lighting control panel or Left Switch Pod (LSP). Each of these components communicate via a serial data circuit that is controlled by the BCM. As a backup system, the BCM also controls two redundant relays that will allow for essential lighting in the event of a major system fault.