SEA_SPEARS

Hi all! I am trying to determine which light bulb I need to purchase for the room lamp/dome light in the cab of my 1982 Datsun pickup. There wasn't any bulb in it when I took the cover off and I have had little luck looking up which bulb I need. All that I know is that it is a "type C" bulb according to the manual. Can anyone tell me which bulb I need? Maybe a specific one that you have in your truck now? I've tried to attach pictures of what I could find about it the bulbs in the manual and what the dome light looks like if it's helpful. Here are the links to the pictures if they do not upload: https://ibb.co/myfzAS https://ibb.co/e3KsVS https://ibb.co/d5kzAS I really appreciate the help in advance!