For the 2015 Dodge Grand Caravan, the low-beam and high-beam headlights both use H11 bulbs. The supplied fitment data does not list a projector or non-projector variation, so no headlight-type distinction is specified for this model year.
The fog lights use 2504 LED bulbs, while the daytime running lights use H11 LED bulbs. At the front, the turn signals and parking lights use 3757A, and the front side markers use 2827.
Other useful exterior applications include 3157 for the reverse lights and 168 for the license-plate lights. Interior fitments include 194 for the courtesy and glove-box lights, 578 for the dome, interior, and reading lights, PC579 for the map lights, and PC74 for the instrument lights.
The trunk light has two listed possibilities: 561 or 578. Compare the original bulb before ordering to confirm which option is installed.