Non-Dimmable Backlighting
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is in the START or RUN positions, the delayed accessory relay provides voltage from the smart junction box (SJB) to the non-dimmable components.