Motor & linkage screw. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Headlamp Control Module to a mounting point. Fender Bolt. Washer Fluid Reservoir Bolt. Windshield Wiper Linkage Bolt. and. and screw. and Washer. Fender. High Intensity Discharge (HID) Headlight Control Module. Washer Fluid Reservoir. Windshield Wiper.