For the 2004 Dodge Caravan, both the low-beam and high-beam headlights use a 9007 bulb. This dual-function bulb handles the two headlight settings, so verify the original bulb before ordering.
The front fog lights use 9040. Front turn signals, parking lights, and front side markers use 3157A. At the rear, the reverse lights and rear turn signals use 3057, while the tail lights and brake lights use 3057R. The rear side markers use 3057A, and the center high-mounted stop light uses 921.
Interior fitment includes a 578 bulb for the dome, map, and trunk lights. Courtesy-light fitment varies: compare the original bulb when choosing between 194 or 7441 (Option 1), or use 578 for Option 2. The glove box may use 194 or 7441, while the instrument panel uses PC74. License-plate lighting may use either 168 or 917.