RH and LH Turn Indicators
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster provides a ground for the RH and LH turn indicators. When the multifunction switch is in the RH or LH turn position, voltage is supplied to the instrument cluster from the SJB through hardwired circuitry and the RH or LH turn indicators flash on and off.