337.12 COWL, FENDER AND BACK-UP LIGHTS.
(a)   Any motor vehicle may be equipped with side cowl or fender lights or lights on each side thereof which shall emit a white or amber light without glare.
(b)   Any motor vehicle may be equipped with back-up lights, either separately or in combination with another light. No back-up lights shall be continuously lighted when the motor vehicle is in forward motion.
(ORC 4513.13)