So I want to create an enchantment on Dawnbreaker that radiates light around the player (Same range as a torch but same colour as the light the hilt gives off) but I can't see an option for another enchantment on top of the regular one. Even then looking through the enchantment list doesn't show any light related ones.

So how do I add a second enchantment to a weapon already enchanted -and- how can I create a light enchantment on said weapon?

Continued flicking through creation kit. And fiddling with various options but I still do not see any method of doing this.
As a reminder, I don't want someone else to make this mod. I want to do it myself, I just want to see if the possibility is there.

Second enchantments can't be added to weapons. Before someone jumps on this, don't misunderstand.

What can be done is you can add as many effects to an existing enchantment as you want BUT only that enchantment can be added to a weapon.

So if you want add a light effect, it has to be added to that enchantment. That being said, to avoid conflict issues, with that particular enchantment, make a custom one.

And I no idea how to make a light effect as an enchantment.

The light enchancement - here's the ID: StaffEnchMagelight