For the 2022 RAM 2500, the low-beam headlights use H11 bulbs, while the high beams use 9005LL bulbs. The fog lights also use H11, so confirm whether you are replacing a headlight or fog-light bulb before ordering. This fitment data does not list separate headlight variations, such as projector and non-projector applications.
Exterior lighting uses several different bulb types. The front turn signals and parking lights use 7444NA bulbs, while the front side markers use 194 bulbs. At the rear, the brake lights and tail lights use 7443 bulbs, and the rear turn signals use 12174NA bulbs. The center stop light uses 921.
- License plate lights: 194
- Dome and map lights: 578
- Glove box light: 194
- Roof lights: 194NA
- Trunk light: 921
Check the original bulb and socket when replacing a less common interior or rear-light bulb, particularly where suffixes such as LL, NA, or the distinct 12174NA designation apply.