2004 Ford Explorer New Stereo Install "WIRING"

[wred_head]

I just bought a Pioneer stereo and am trying to find information about the wiring of my explorer. the stereo looks like this http://www.xmfan.com/viewtopic.php?t=33388. There are 2 plugs that fit in to the back of the stereo. the bigger of the 2 plugs has a diagram but nothing for the smaller of the two plugs. I have looked for the last week trying to find out what this other is plug is for. Can anyone please help?

 

[DjDom]

Attached is the wiring diagram for your radio.

One plug on those radios is usually for the CD Changer. But it may just be for speaker out.
Check the diagram here.