1996 Ford Bronco Owner's Manual - Page 136

Automatic Dimming Inside Rearview Mirror (If equipped) Automatic dimming inside rearview mirror This mirror is equipped with an electrochromic glare control feature that automatically darkens the mirror, reducing glare from the headlamps of vehicles behind you. A forward facing light sensor measures the ambient light just as your eyes do. When the rear facing light sensor in the glass senses glare, such as from following headlights, it energizes a chemical layer in the glass causing it to darken and absorb light. As the glare subsides, the mirror glass returns to its normal clear state. To turn the mirror on, push the On/Off switch, located on the bottom of the mirror, to latch it in the ON position. The button will be latched in the up position and at night a low intensity green light will be visible from the button when the mirror is turned on. To turn the mirror off, 136