After equipping the armor or weapon mod don't forget to toggle it on/off, default is F, whatever button you have bound to light source.
Armor mod is incompatible with night vision, night vision will activate but the mod won't. Haven't tried headlamp.
I found something I'm going to try, not exactly what I wanted but should work, I'll leave the link for you if you're interested.
https://www.nexusmods.com/7daystodie/mods/6266
Looking for a mod which may very well exist but the search function is driving me mad.
I'm after a mod that restricts the increased jump height of Parkour to just one block while crouched, so I can stop trying to rocket through the ceiling during precise jumps, I'm aware you can just not read a...