Delaware Code
Subchapter I. Equipment Requirements
§ 4314. Lights and reflectors; change of original design or performance of vehicle.

A person may not use on any motor vehicle or trailer any light, lamp or reflector that tends to change the original design or performance of the motor vehicle or trailer, unless the light, lamp or reflector is of a type that has been approved by the Department and is mounted, adjusted and aimed in accordance with regulations adopted by the Secretary. Such regulations shall not violate the Federal Motor Vehicle Safety Standards.