So you want a aux input (3.5mm stereo plug), or an ipod interface so you can control and charge your ipod/iphone from the radio?
Both can be done and is plug and play but it its very vehicle specific. So you have the in-dash changer... do you have XM?
for a 3.5mm there are 2 options, a FM modulator (which requires a bit of wiring but is cheaper (around $35), you would have to tune to a specific station but it is hardwired to your antenna, so the sound quality is great.
Or you can do a Auxiliary input converter, which is simply plug and play. I just put one in my buddies '04 explorer and it was super easy and works great.
If you want just a 3.5mm jack and would like something that is plug and play, this is your best choice.
http://www.logjamelectronics.com/piegm12aux.html
If you want the ipod interface (control and charge your iphone from the radio) we need specifics.
Do you have XM? Do you use XM if you have it? Do you have a CD/Aux button on the radio?
