How to replace the fuse for cig lighter. all is shown is 2 long slim blocks.

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Not sure how to replace the cig fuse, the layout and book points to #16 which is ALT 120A with many things it controls. I have two long skinny blocks where the book shows different fuses. There really is no 4- 16 fuses. They start at 13. Mine is under the hood. So what up with the long blocks and do you pull them out?