For the 1999 Honda Civic, both the low-beam and high-beam headlight positions use a 9003 bulb. The same bulb serves both functions, so verify the original bulb and connector before ordering.
Other useful exterior fitments include 1157A for the front turn signals, parking lights, and front side markers. Reverse lights use 7440, while the brake lights use 7443R.
- Center stop light: 921 is listed generally; coupe models may use 7440, while sedans may use 3497. Compare the original bulb on these configurations.
- Rear side marker: Coupe uses 7443A; hatchback uses 168NA.
- Rear turn signal: Coupe uses 1157A; sedan uses 7440.
- License plate and tail lighting: 168 and 917 are listed for the license plate, while 7443R, 168, and 917 are listed for the tail light.
- Interior lighting: Map light uses DE3022 and trunk light uses DE3021. Dome and instrument lighting have multiple listed options, so compare the original bulb before replacement.