Audio Systems: rca plug on factory stero, 2005 ford lariat, auxiliary input adapter

Question
I have a 2005 ford lariat f150 with a factory am/fm radio and 6 cd changer. Does it have rca plugs in the back. On the front is an aux button but there is no plug in to be found. The owners manual is not much help.  

Answer
Yes most ford radios have a AUXILIARY   AUX  button on the radio or SATELLITE SAT
and there are no plugs in the back because that is use for their video system or satellite radio,

you just need to buy the correct plug audio interface for your ford radio and it will work,
you can input audio from your ipod mp3 or any anudio source
in your vehicle usw this

http://www.oemautosound.com/pc-192-86-pie-frd04-aux-ford-2004-2008-auxiliary-inp...