Pathetic excuse of a lore to justify this :

"It is said that somewhere in the wastland... and organisation even more secret than the institute only known as "The Nexus" exist... hoooo spooky!
Legends goes that they possess some kind of technology who can bend the rules of reality and modify the way the world is... they call it ... MODS
Although no real proof of their existence has been found, this pip-boy seems authentic... Could it come from the Nexus itself? "

Hell yeah i'm so good at making stories! 

What is it in reality :

...Yup, just another pip-boy retex! Nexus Pip-boy! At least one retex I hope no other website can steal and pretend nothing happened!

It has working normal maps and looks cool enough I think!

UPDATE :
You now have 3 files to choose from!

The Nexus Pip-Boy Fallout 3/4 Edition !
The Nexus Pip-Boy New Vegas Edition !
The Nexus Pip-Boy Fallout with swords and dragon edition !

Installation :

The usuall copy/past 

1. Go to "Documents\My Games\Fallout4" and open the file "Fallout4.ini" and edit the following line:
Find:
sResourceDataDirsFinal=STRINGS\
Change to:
sResourceDataDirsFinal=STRINGS\, TEXTURES\
2. Drop the "texture" folder into your data folder.
That's it!