CB antenna install,(headliner)?

Putting my new remote Cobra radio in,its mounted under the console.Got the cable as far as the top of the "B-pillar",tomorrow I want to get it the rest of the way to "Dome" light,does anyone know how it comes apart(I didnt break anything yet today:seats out,carpet somewhat up,trim removed).

There is a star-clip that is on the post (between the rivet and screw in the picture). Grab it with a pair of needle nose pliers and pull it off. My finally broke after removing them a couple of times so I used a short, self tapper screw into the cross member.

I should have mentioned its a 2000.Anway,got it apart last night,its mounted way different than earlier models.