For the 2003 Honda Accord, the low-beam headlights use 9006 bulbs, while the high beams use 9005. The daytime running lights also use 9005 bulbs. The supplied fitment data does not list a separate projector or non-projector headlight variation, so confirm the existing bulb before ordering.
Factory fog lights use H3 bulbs. Front turn signals, parking lights, and front side markers use 1157A bulbs. Rear lighting has several configuration-specific differences:
- Reverse light: 921 for Coupe models; 7440 for Sedan models.
- Rear turn signal: 7440 for Coupes; 7440A for Sedans.
- Rear side marker: 7443A for Coupes; 168 for Sedans.
Brake and tail lighting uses 7443R, with an additional 194R tail-light fitment. The center stop light uses 7440, and the license plate light uses 168. Interior applications include DE3175 for the dome and map lights, 194 for the glove-box and interior lights, and 6612F for the vanity light. The ash light may use 2721 or 74; compare it with the original bulb.