Unknown fuses? Any ideas?

I've got a couple of fuse blocks on my driver side engine bay and I have no idea what they go to. The car is a 1975 240D. Does anybody have any ideas? I've linked to a photo with the items in question circled in red. One holder is missing a fuse and I'd really like to know what that's about. Link to picture If you get a 404 on the image just try hitting return on your keyboard to reload it. Thanks, Joshua

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