No it’s not prewired as such but the kit fits neatly inside the helmet and the control buttons sit nicely on the side in the recess that is just above the dark visor slider. My concern if I go that route is whether the V3 unit will communicate with my pillions Scala Evo 20S.
There’s quite a lot of videos on UTube.
Due to the design of the helmet and the lip on the bottom it’s difficult to fit another unit without cutting the trim away.