Those look like regular 921 wedge bulbs. They should just pull out of the receptacle. There is no base on that bulb. The contacts are just wires that wrap back around the glass base.
So pull JUST the bulb, not any of the plastic behind the bulb.
2013 Rockwood 8289WS
Mods: Central Vac, PI EMS-HW50C, 2025RV, (2) SCS225 Trojans, PD9260, Awning Remotes & LED Lights, Eliminators, External Water Filter,, Intellijacks
2008 RAM 3500 Cab&Chassis Hauler Bed, B&W Companion Hitch
All My Modifications are at this link: