S.C. Code § 56-5-4640
Whenever a vehicle is lawfully parked upon a street or highway during the hours between a half hour after sunset and a half hour before sunrise and in the event there is sufficient light to reveal any person or object within a distance of five hundred feet upon such street or highway, no lights need be displayed upon such parked vehicle. Whenever a vehicle is parked or stopped upon a roadway or shoulder adjacent thereto, whether attended or unattended, during the hours between a half hour after sunset and a half hour before sunrise and there is not sufficient light to reveal any person or object within a distance of five hundred feet upon such highway, such vehicle so parked or stopped shall be equipped with one or more lamps meeting the following requirements: At least one lamp shall display a white or amber light visible from a distance of five hundred feet to the front of the vehicle and the same lamp or at least one other lamp shall display a red light visible from a distance of five hundred feet to the rear of the vehicle, and the location of such lamp or lamps shall always be such that at least one lamp or combination of lamps meeting the requirements of this section is installed as near as practicable to the side of the vehicle which is closest to passing traffic. The foregoing provisions shall not apply to a motor-driven cycle.
Any lighted head lamps upon a parked vehicle shall be depressed or dimmed.
S.C. Code § 56-5-4640