This video shows how you can do it yourself installation of the siruis radio in an SUV. Personally I found the whole task a little daunting, and I am simply inadequate when it comes to fundamental understandings of electronics.
I paid to get mine installed. The Geek Squad at Best Buy did a fine job and they have worked on the exact vehicle model before, so I felt confident in leaving them my 2007 Ford Escape for an hour and a half. I paid an extra $130 for installation and a bracket upgrade so I wouldn't have to use the over-sized plunger stuck to my windshield.
