What's the 2018 ram 2500 reverse light bulb size?

The 2018 Ram2500 is equipped with reflector headlights that use 9005 bulbs in both the low beam and high beam assembly. The reverse light bulb size for this truck model is 921. Owners can manage replacement by opening the bed's door and removing the reverse light assembly with a T20 torx driver. Unscrew two screws located at the top and bottom of the lamp. Pull away from the truck, also releasing clips installed on its outer edge. Unplug and twist the bottom plug to access the reverse light bulb. Re-install by rotating new part clockwise. Turn the new bulb to lock into place, making sure the gasket ring surrounding it is secure and seated properly.