The single wire has no connector at all, don't remember what it had when it came out a few years ago. The other area for a connector on the radio looks to be about the size of a USB receptacle. Can't tell if there is any pins or not in it right now, but I don't see a blade in there at all or a blade receiver. Will have to look in the daytime.
This link shows the 5 connections, the antenna, the 2 harnesses, and 2 single plugs. The small red and white plug on the left looks like it would go into the small plug receptacle I was talking about. Found out this one is for the stereo wheel controls which this Durango doesn't have, hence I don't have this wire. Then there is small black one on the right which might be the ground wire or not? Plus there are the two blade like prongs on the back of the stereo case, might that be where you ground the radio to?
You can click on the image to enlarge it.
http://www.craigcentral.com/durango/images/radio12.jpg
Mike
USAF Retired