I was wondering if anyone here knows what the blue jack in the pic is for? (i.e. - which feature would get disabled if there's no wire harness connected to that particular jack?)

Happy New Year!

 

i installed a vais ipod video unit. the blue jack takes video in. or at least thats what i believe for my vais unit.

 

I just had mine apart and I think it was a gray color plug that went to it? do you have ML and DVD? Mine has that plug so if you dont have it and dont have ML or DVD that is probably what its for?? I am sure one of the veterans from here will know what its for!