THE NEXT BIG THING
South Carolina Laws Regarding
Over glow and Under glow lights
South Carolina law does not restrict additional vehicle lighting which would include neon overglow or underglow. Therefore it’s our conclusion that in South Carolina neon overglow or underglow is not illegal, as long as you follow the following restrictions:
No red lights may be visible from the front of the vehicle
Blue color is reserved for police vehicles and may not be visible anywhere outside the car
Flashing or rotating lights are prohibited
License plate illumination must be white
"Nothing contained in this article shall be construed to prohibit the use of additional parts and accessories of any vehicle which are not inconsistent with the provisions of this article.
Any lighted lamp or illuminating device upon a motor vehicle, other than head lamps, spot lamps, auxiliary lamps, flashing turn signals, emergency vehicle warning lamps, and school bus warning lamps, which project a beam of light of an intensity greater than three hundred candlepower shall be so directed that no part of the high intensity portion of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than seventy-five feet from the vehicle.
A person shall not drive, move, or park any vehicle or equipment upon a highway with a lamp or device on it displaying a red or blue light visible from directly in front of the center of it. This section shall not apply to a vehicle upon which a red or blue light visible from the front is expressly authorized or required by this chapter.
Flashing lights are prohibited except on an authorized emergency vehicle, school bus, snow-removal equipment, or on any vehicle as a means of indicating a right or left turn or the presence of a vehicular traffic hazard requiring unusual care in approaching, overtaking, or passing."