Ballast screw. Left.2013-16. Right.2013-16. A bolt used to attach the blind spot detection warning sensor to its mounting point. A Screw that is used to secure the Headlight Control Module to the mounting point. A Screw that is used to secure the High Intensity Light Ballast to its mounting point. A Screw used to attach the blind spot detection warning sensor to its mounting point. A threaded rod with a drive Head (such as hex, 12 point, torx, etc.) on one end used to secure the High Intensity Light Ballast to a mounting point. Tail Light Screw. Blind Spot Detection System Warning Sensor Bolt. Bracket. Headlamp Control. Headlight Control. High Intensity Discharge (HID) Lighting Bolt. Tail Light.