There are basically three types of light bulbs in a camper.
The 110v screw in and screw out like a house light bulb.
The 'tail light' light bulb that have a 'nub' on each side where it is pushed in. Push in and twist to the right. It will settle into a little slot as a spring pushes on it from the back side. To remove, push in and twist 1/4 to the left and pull straight out.
The push pin type will push right in and you should be able to pull it straight out.
2013 Forest River Salem Hemisphere SBT312QBUD
2001 CrewCab F-250 7.3 PowerStroke Diesel
SuperChip, BTS transmission, 6.0 Trans Cooler