I am pretty sure they are legal. My HHA single .010 pin is so bright a light is not necessary.
They are 100% legal, it's in the manual. When they became legal I do not know though. I know in 2012 there legal because I stumbled across a post on this site in 2012 where someone copied and pasted the regs about sight lights showing they were legal.
From the manual:
"Lighted pins on
bow sights and scopes with lighted reticles may be used as long as
they donít cast a beam. Any device used as a sight or scope on any
firearm, bow or crossbow that projects a light beam of any kind onto
the target is unlawful. "