Does factory antena need a blue wire?

In this picture I have blue wires from my amps with a metallic plug at the end.

There's also an antena wire coming off the wiring hardness.

And the with all the Metra stuff there's an adaptor that has a plug for rhe factory antena but also a blue wire going into the factory harness.

Do I need to plug the blue wire fron the wiring harness, labeled antena, to both my amps and the factory antena? Or should I factory antena needs power?

I was just going to plug the amps into the antena wire off the harness and noticed this

 

Nevermind. That's for the antena. There's so many damn wires I didn't see this other wire to power the amp....which apparently past me already put a plug on to make ibstall really easy. Wow. Embarrassing thread here.

 

It's totally understandable in a project of this scale.

 

Thank you for saying that