§ 153.161  SIGN ILLUMINATION.
   (A)   The letter  “N” means that the sign shall not be lighted.
   (B)   The letter  “L” means that the sign may be illuminated.
   (C)   All lighted signs shall have the lighting from an internal source or directed in a manner as to illuminate only the face of the sign.
(Prior UDO, § 9.2)  Penalty, see § 153.999