I've got an 07, managed to grab an 09 head unit and AUX panel for free, as I wanted MP3 and AUX-in capability. I ordered the 'condensor' wire from Toyota to run from the HU to the AUX panel...but looking at the 09 HU, all the outputs are the same as my 07. And yes, it's an 09+ unit, it has the AUX button, MP3/WMA decaling. What's the deal here? Where does the condensor wire plug in?