Questions about my 84 K10

[SourTooth307]

Hey guys, since I'm lacking any kind of owner's or service manual, I was hoping to get some help with a couple things up with my '84 Scottsdale. The cigarette lighter and the dome light seem to be shot, I changed the bulb in the dome light but it made no difference. I'm thinking a fuse might be the issue since both don't seem to work and are prolly shared. Can anyone tell me which fuse that is, or better yet, if someone's got a map of the fusebox. Also, I'm going to be replacing my driver's side door with one that has less rust, as well as swapping out the lock sylinders. What would that entail if I have no power locks or windows? If I think of anything else I'll throw it in here, thanks everyone.

Oh, also I noticed one of the 4 dash lights, amber and says CHOKE. When is that supposed to come on?