Alpine dash

[HillmanAvenger]

[lookas]

I don't wanna open new topic,so I'll ask here 

I finally got the alpine/GLS dashboard,so I wanna now installed in the car.
Is it installation a same on both dashboard? The main port on the installation?
Or should improvise???  Or I have to cut the wire, and use a new Alpine/GLS main port ??
Can someone explain to me,who has tried ??

Thanks