The default Dawnguard Heavy helmet looks awesome , while the light one looks like you have a leather egg on your head . So i decided to covert the heavy helmet to light armor ! its not up gradable or craftable but i think i could learn how to add those features .

OLD LOCATION : ON THE FLOOR RIGHT WHEN YOU GET IN TO THE LEFT , IN THE BANNERED MARE.
NOW CRAFTABLE UNDER THE MISC. CATEGORY . REQUIRES 2 STEEL INGOTS .

I changed the weight from 10.00 to 8.00 . Thats about it...

I used different mods for the textures and visuals so all credit goes to those authors . i will try to provide you with all the links possible ! :)
Realvision ENB: http://www.nexusmods.com/skyrim/mods/30936/?

Noldorian Bow And Quiver: http://www.nexusmods.com/skyrim/mods/29329/?

EotW Dawnguard DLC Textures Remastered: http://www.nexusmods.com/skyrim/mods/51947/?

Enjoy , im pretty sure i credited everyone . If you have any suggestions or if i forgot to give credit to someone let me know ! thank you