brian,
not sure if you know about brandons' web page so I will post a link. it is a wealth of info for swaps. for your question though, I am not sure about the pink wire to fuse box? (i don't think so). I do know that the "open slots" on the fuse box are open for the factory options ordered above the "basic" truck functions. IE: custom deluxe compared to silverado.... not 100% on that though.
link:
https://www.lt1swap.com