Is it illegal to add lights on the bumper of a sedan?

[StNoah]

Adding lights on the bumper of a sedan is illegal. Below is relevant information about vehicle modifications. Legal modifications: Installing a new grille or bumper must not alter the original vehicle's length and width, the car emblem cannot be changed, and the bumper must not have obvious protrusions. As long as the tire size and specifications match those on the registration certificate, the tire style can be changed. Changing the vehicle's color through painting or wrapping must be registered with the vehicle management office within ten days to update the vehicle information. Note that colors similar to those used by police cars, fire trucks, etc., are not allowed. Illegal modifications: Generally, the size of the wheel rims cannot be altered; changing them is considered an illegal modification. Adding a spoiler, extensive body kits, or modifying the exhaust pipe are, in principle, not permitted.