North Carolina General Statutes Chapter 20. Motor Vehicles § 20-132. Acetylene lights

Motor vehicles eligible for a Historic Vehicle Owner special registration plate under G.S. 20-79.4 may be equipped with two acetylene headlamps of approximately equal candlepower when equipped with clear plane-glass fronts, bright six-inch spherical mirrors, and standard acetylene five-eighths foot burners not more and not less and which do not project a glaring or dazzling light into the eyes of approaching drivers.