Just attempted my first car modification when I connected the USA Spec PA15-Hon2 in my 05 Honda Accord EX (with XM). When I connected it to my ipod, the Ipod started to charge and had the word "Honda" on the Ipod screen but when I tried to push the XM/CD/Aux button, it didn't change the screen at all. I obviously missed something in the wiring sequence but it's getting power. Does anyone have an idea for how to correct it?