Originally Posted by SCPowerstrokecowgirl
Sorry this is very confusing
only until you do it once.
http://www.amazon.com/FRD04-AUX-Lincoln-Auxiliary-Converter-Charging/dp/B009LM7A5G/ref=sr_1_4?s=electronics&ie=UTF8&qid=1361401280&sr=1-4&keywords=frd04-auxThe back of your factory radio has a plug for the factory rear entertainment system or six-disc changer, that plug is where this box (the PIE adapter) plugs into. The PIE adapter then has a pair (red and white, left and right) RCA jacks. Then you need the adapter cable that plugs into those, and has a socket for the 3.5mm (1/8") stereo mini-plug from your phone. They have that adapter cable that is made to look clean and nice in a small hole in the dash somewhere, or you can leave it dangling from under.
There's a similar arrangement if you want the iphone to charge, has their special plug instead of the 3.5mm.
The stuff you need is gonna run you in the neighborhood of $80. As I said, if I had it to do again, I'd just replace the factory radio with an aftermarket that already has the features I want.
The link I originally had there was supposed to take you to a search results page, but it apparently didn't work so the link now takes you directly to a particular PIE adapter with a plug, but that plug looks like it's the one for the iPhone, so don't buy that particular one. It should be relatively easy to find the one you want from there. I ended up buying the adapter cable separately on mine.
Here's what I bought