Rear view mirror assembly with optical indicator

A rear view mirror assembly is proposes having at least a mirror base and a mirror head covering a mirror glass (54) mounted into the mirror head and an optical alert indicator (62) that produces light in reaction to a sensor signal to inform operator (28) about hazardous information and the light shines through the mirror glass (54). The mirror glass (54) is mounted to a backing plate (52) that has a mounting space (53) for at least one LED (64) and at least one light guide structure that can be a wedged light guide or a light guide pin.