An exterior rearview mirror assembly of the present invention, includes a lamp module with light sources functioning as a turn signal indicator, a security light, and a blind spot indicator. The light module may include at least one LED device that is activated during different activation modes so as to operate in two or more of the following modes: a blind spot indication mode, a turn signal mode, and a security light mode. The LED device may emit light of different color during the different modes of operation. The security light may be oriented to illuminate the door handle and keyhole. The light module may be positioned behind the mirror element to project light through the mirror element.