I have a 2009 Scion xB Release Series 6.0. It has a Pioneer AVN GPS head unit. I just purchased a SiriusXM satellite radio kit off Amazon and am having trouble getting it to work with the Pioneer unit. When I plug the cord into the AV input, nothing happens on the Pioneer radio. It's as if I plugged nothing in. I tried using the cord that came with the Scion, as well as the cord that came with the kit. Neither worked. Any suggestions other than taking it to Best Buy and seeing if they can install it?