Hey, haven't been in there to look at those things myself, but here is a tidbit from the Ford Factory TSB on wire harness replacement:
"9. Release the maxi fuse assembly retaining tabs, then slide the maxi fuses out from the bottom of the relay box. See Figure 9."
The figure isn't that much help but shows where the tabs are located on the box.
Search for the 99M03 wire harness recall on this site and you can download a PDF with all the instructions to check out the figure, this step is on page 18 and 19.
Good luck,
PANGLOSS
