Second Fermenting Vessel

[crum]

When wine is in the second fermenting vessel will light affect it?
Should it be stored in a dark place or is the sunlight from a window ok.

 

[Witbier]

When wine is in the second fermenting vessel will light affect it?
Should it be stored in a dark place or is the sunlight from a window ok.

I always cover my carboys with an old shirt or something. Don't want to take the chance.