What is the excess charging capacity of a 2005 carbed Dyna?

I am trying to figure out some highway lighting options and need to keep the loads within specs.

The factory shop manual doesn't have it, and I can't find it anywhere.

Thanks for the assistance.

 

Best I can do is point you to;
https://www.hdforums.com/forum/elect.../?daysprune=14
if you don't find the answer start your thread there

 

I already searched there.

If no one knows here, I will post there next.

The best estimate I can come up with, by accounting for all loads on the system, is I have between 100-135 watts of excess charging capacity. I think that number is safe, but it is also based on peak charging watts. I'm sure there are some guys in here that can help me.