An accessory system for a vehicle includes a bracket having an attaching portion and a pair of attaching arms extending from the attaching portion. A mirror mounting base is configured for attachment at the attaching portion. With the attaching portion attached at the in-cabin surface of the vehicle windshield, the attaching arms extend from a lower region of the attaching portion along the in-cabin surface of the vehicle windshield below the attaching portion, and a camera module is attached at the attaching arms so as to be located at the in-cabin surface of the vehicle windshield below the attaching portion and at least partially between the vehicle windshield and a mirror head pivotally attached at a pivot element of the mirror mounting base. A housing encases the bracket and the camera module, and encases a portion of the mirror mounting base with the pivot element protruding through the housing.