For the 1999 Hyundai Accent, the low-beam and high-beam headlights both use a 9004 bulb. The supplied fitment data does not indicate a separate bulb for each beam or a variation by headlight type, so verify the existing socket before ordering.
Factory fog-light fitment may use either an H3 or H3C bulb. The front turn signals, parking lights, and front side markers use 2357A bulbs, while the rear side markers use 168NA bulbs.
For the rear lighting, the brake and tail lights use 2357R bulbs, the rear turn signals use 2357A, and the reverse lights use 1156. The center stop light also uses an 1156 bulb. License-plate lighting is listed with two possible sizes—168 or 917—so compare the installed bulb or socket when replacing it.