Safety Belt Warning Indicator
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The safety belt switches are hardwired to the RCM and the RCM monitors the safety belt switch position. The RCM communicates the safety belt information to the LCM over the SCP which is then relayed to the instrument cluster over the SCP network to turn on or off the safety belt warning indicator according to the safety belt switch position.