[loopsandsounds]

I need some help from the collective. I am working on a DIY for a factory SIRIUS install WITHOUT the satelitte prep option. I have the unit installed, and got my software updated (but still waiting for the retrofit coding, long story, I'll document in the DIY). Now I am looking to connect the antenna. Does anyone know how to get to the shark fin, and once you get there, does anyone know if the SIRIUS antenna is built in but the leads just aren't connected?
Just knowing how to get there would be a start. Looks like there is a cover on the rear seat roof that I can take off, but I just don't want to start prying on it...