This link is for 2021 F150 owners manual pdf file. You can go to index and enter page number of choice. I believe fuse info is about page 450 for under hood fuse box and has fuse locations and listings for various lights. This file is also accessed on my trucks large center screen at Features, then Owners manual. https://www.fordservicecontent.com/...-Owners-Manual-version-1_om_EN-US_09_2020.pdf