337.11  SPOTLIGHT AND AUXILIARY LIGHTS.
   (a)   Any motor vehicle may be equipped with not more than one spotlight and every lighted spotlight shall be so aimed and used upon approaching another vehicle that no part of the high-intensity portion of the beam will be directed to the left of the prolongation of the extreme left side of the vehicle, nor more than 100 feet ahead of the vehicle.
   (b)   Any motor vehicle may be equipped with not more than three auxiliary driving lights mounted on the front of the vehicle.  Any such lights which do not conform to the specifications for auxiliary driving lights and the regulations for their use prescribed by the Director of Public Safety shall not be used.
(ORC 4513.12)
Penalty - see Sections 307.01 and 307.02