67 Dart Radio install

[arod15]

Im trying to install a stock radio I got on Ebay on my Dart but cant figure out the wiring. To make matters worse the wiring is kinda hacked up in the dash. The radio comes with 3 plugs. One plug is made up of a red and an orange wire the other is a single green wire that makes a plug and finally theres a black wire. In the dash theres a socket that I am pretty sure is where the orange and red plug into but I don't know what to do with the other wires???Any help would be greatly appreciated.

[arod15]

here are some pics.

http://pg.photos.yahoo.com/ph/atencion13/album?.dir=/2192scd

[Dart67]

The green and blac wires are to the speaker.

Herb

[WildCat]

Red wire is power wire-orange is light- green and green with black stripe are speaker wires

There should be a plug under the dash for the radio plug to plug into.

I bought a new 4"x10" speaker to put in the dash on my 67