We used to have an ipod interface connected to the stereo but that was back when Apple used the wider connector style. Last year I took that connector out and tried putting a connector in that I got from ebay which was supposed to give me aux in capabilities...well it did that just fine but it shut down the navigation and bugged up the HVAC too...my wife was not impressed. Has anyone had good luck buying an aftermarket connector/harness that smoothly integrates with existing bells and whistles? All I need is aux in, no need for an Apple plug-in. I'm also not a big fan of the FM-style converters - I don't find that they sound great. Any suggestions?