Just purchased the USA Spec PA15-NIS kit with installation on Saturday for $200 total. At first they were trying to install the USA Spec PA15-INFI version and I noticed them going to the trunk and taking out stuff. I thought it was odd because I didn't see this on DIY forum. Anyways, they eventually realized to use the USA Spec PA15-NIS version once they figured out I didn't have SAT radio, but only the SAT button. They ended up installing two plugs for me (AUX plug and Ipod plug) through the center console. As mentioned by eJay, when using the AUX plug you can not see the title on the Navigation screen and that you would have to use the Ipod plug. So far so good. However, it was setup so I can not track through the steering wheel. I have been using the AUX plug most of the time.