Originally Posted by Mparent

If it is like my 2007 GX470, it is audio (no video) and it does have a small bit of circuitry included (I pulled my aux plug adapter out to look). It probably is noise shielding in the adapter. A standard 3.5mm stereo cable connected to my iPhone works just fine but does require volume set to max on the iPhone and, at least, 40 on the car (have gone to max car volume level frequently). Various EQ settings work better on the phone than others - play around till your happy. I plugged a Blackberry Music Gateway (wireless adapter) into my car AUX to create wireless connection. Hope this helps.