Patent attributes
A mirror reflective element sub-assembly for a vehicular exterior rearview mirror assembly includes a mirror reflective element, a mirror back plate, and a blind zone indication module. The module includes a housing, a circuit board and a light source and is disposed at an aperture formed through the back plate. The circuit board includes circuitry and electrically conductive terminals in electrical connection with circuitry of the circuit board. The electrically conductive terminals extend into a connector portion of the housing. The connector portion is configured to connect to a connector of a wire harness of the exterior rearview mirror assembly. The circuit board may include a constant current circuit that provides a constant current output to the light source over a range of supply voltages provided by a power source of the vehicle. The mirror back plate may include structure at least partially circumscribing the aperture for receiving the module.
