Flintlockip

So yeah I think I just want to Hijack the default Pipboy on/off button and not mess with .hkx files. And from what I understood I need to connect the Pipboy .nif with the single light .nif, so that it would act as one. But how exactly do I connect the .nifs? And make them both turn them self's off and on. Would I need to use "BSBehaviorGraphExtraData" and connect the Pipboy .hkx to the single light .nif? If you could give me an example it would be really helpful. Nifskope is still new territory to me. But to be honest I might as well just learn how .hkx files work and find a way to export them to Blender and back.

Right now I'm working on a Pip-Boy lighting overhaul that makes it into a directional light that glows from the its own screen. And I had an idea from a comment to update it and add a secondary light on top of the original one that would act like bounce lighting that turns its self on and off at same time the as the pre-existing light does, but I'm unsure of how to do it or if its even possible. Here's the mod I'm working on: https://www.nexusmods.com/fallout4/mods/67472?tab=description