For the 1999 Toyota Camry, both the low-beam and high-beam headlights use a 9003 bulb. The supplied fitment data does not identify a projector or non-projector headlight variation, so verify the original bulb before ordering if your headlamp assembly has been replaced or modified.
Notable exterior bulb sizes include 1157A for the front turn signals, parking lights, and front side markers. The rear turn signal uses 3157, while the brake light uses 3157R. The tail light has two listed possibilities—904 or 3157R—so compare the original bulb before purchase. The reverse light and center stop light both use 921.
For interior and utility lighting, the dome light uses DE3175, and the glove-box light uses 2721. Courtesy lighting may use DE3021 or DE3175. License-plate lighting is listed as 2825 or 98, and the instrument lighting has multiple listed options; compare the original bulb for those applications.