A lighted exterior mirror system for a vehicle includes an exterior mirror assembly having a mountain portion, an exterior mirror housing and a reflective element. A signal light assembly is disposed at the exterior mirror housing and includes at least one light emitting source and a light conduiting element, which has a body portion having a plurality of light conduiting portions established therein. Each of the light conduiting portions has a light receiving end and a light emitting end. The light conduiting members are arranged in a generally radial fashion so that the light emitting ends are arranged to follow an exterior contour of the exterior mirror housing. The light emitted by the light emitting source is received at the light receiving ends and is emitted from the light emitting ends along the exterior contour of the exterior mirror housing at which the light conduiting element is disposed.