A side rear view mirror assembly (24, 26, 126, 226) for a motor vehicle equipped with a blind spot sensor (16, 18) designed to detect objects in blind spots of the motor vehicle, said side (20, 22) rear view mirror assembly (24, 26, 126, 226) comprising: a base (38, 138, 238) fixedly secured to the motor vehicle; a mirror case (40, 140, 240) movably secured to said base (38, 138, 238), said mirror case (40, 140, 240) defining a housing (42, 142, 242) and a mirror opening (44, 144, 244) facing rearward; a backing plate operatively connected to said mirror case (40, 140, 240) facing rearward, said backing plate movable with respect to said mirror case (40, 140, 240); a mirror glass (54, 154, 254) fixedly secured to said backing plate and movable therewith in a manner allowing an operator of the motor vehicle to view rearward of the motor vehicle; and a blind spot indicator (62, 162, 262) fixedly secured to said backing plate and in communication with the blind spot sensor (16, 18) to receive signals from the blind spot sensor (16, 18) and to indicate to the operator of the motor vehicle when an object is in the blind spot of the motor vehicle, wherein an orientation of said blind spot indicator (62, 162, 262) is adjustable by the operator when the operator moves said backing plate to adjust said mirror glass (54, 154, 254), and said blind spot indicator (62, 162, 262) includes a light source to be illuminated when the blind spot sensor (16, 18) senses the presence of an object in the blind spot of the motor vehicle characterized in that the backing plate includes a recessed portion, within which a circuit board, a controller and the light source are secured, with the light source and the controller electrically connected thereto being mounted to the circuit board which is fixedly secured to the backing plate, such that said blind spot indicator (62, 162, 262) is disposed adjacent said mirror glass (54, 154, 254) between the mirror glass perimeter and the perimeter of the backing plate, and said blind spot indicator (62, 162, 262) includes a lens covering said light source, with the lens including an exterior surface, which is planar and parallel with said mirror glass (54, 154, 254), and the exterior surface of the lens includes an elevated border extending around a perimeter of said lens, with a positioning flange of the lens abutting said mirror glass (54, 154, 254) to align said lens with said mirror glass (54, 154, 254). a base (38, 138, 238) fixedly secured to the motor vehicle; a mirror case (40, 140, 240) movably secured to said base (38, 138, 238), said mirror case (40, 140, 240) defining a housing (42, 142, 242) and a mirror opening (44, 144, 244) facing rearward; a backing plate operatively connected to said mirror case (40, 140, 240) facing rearward, said backing plate movable with respect to said mirror case (40, 140, 240); a mirror glass (54, 154, 254) fixedly secured to said backing plate and movable therewith in a manner allowing an operator of the motor vehicle to view rearward of the motor vehicle; and a blind spot indicator (62, 162, 262) fixedly secured to said backing plate and in communication with the blind spot sensor (16, 18) to receive signals from the blind spot sensor (16, 18) and to indicate to the operator of the motor vehicle when an object is in the blind spot of the motor vehicle, wherein an orientation of said blind spot indicator (62, 162, 262) is adjustable by the operator when the operator moves said backing plate to adjust said mirror glass (54, 154, 254), and said blind spot indicator (62, 162, 262) includes a light source to be illuminated when the blind spot sensor (16, 18) senses the presence of an object in the blind spot of the motor vehicle characterized in that the backing plate includes a recessed portion, within which a circuit board, a controller and the light source are secured, with the light source and the controller electrically connected thereto being mounted to the circuit board which is fixedly secured to the backing plate, such that said blind spot indicator (62, 162, 262) is disposed adjacent said mirror glass (54, 154, 254) between the mirror glass perimeter and the perimeter of the backing plate, and said blind spot indicator (62, 162, 262) includes a lens covering said light source, with the lens including an exterior surface, which is planar and parallel with said mirror glass (54, 154, 254), and the exterior surface of the lens includes an elevated border extending around a perimeter of said lens, with a positioning flange of the lens abutting said mirror glass (54, 154, 254) to align said lens with said mirror glass (54, 154, 254).