A turn indicator light and a position light are provided for a rear mirror assembly mounted in a vehicle body. A light body for the turn indicator light is a filament light bulb and a light body for the position light is a light emitting diode. Positioning the lights in the rear mirror permits the width of the vehicle to be more recognizable. The turn indicator light and the position light are provided with individual light bodies, respectively, for allowing independent service to be performed with respect to each light.