They are Deutsch Connectors DT Series. You'll need the socket (female) and the plug.
The Socket is DT-04-2P and you'll need the secondary lock W2P.
The Plug is DT-06-2S and the secondary lock is W2S.
The Sockets accept pin terminals and the plugs accept socket terminals.
Open barrel pin terminals for 14-16GA wire is 1060-14-0122. The open barrel socket terminals for 14-16GA wire are 1062-14-0122. These are the metal connectors inside the connectors.
You'll also need special crimpers for these. Look at the wires you have and you can see how they get crimped. You can get the crimpers at Napa. They also make a plastic tool to help disassemble them but I can do it with a pocket knife.
Call Terminal Supply in Indianapolis at 1-800-989-9632 or visit
http://www.terminalsupplyco.com/
All of the above part numbers are from Terminal Supply. I have their catalog and they are the best automotive wiring supply place I've ever found. They have everything you can imagine for factory wiring and more.
Hope this helps. Once you mess with them you'll get the hang pretty easy. Order extra pin and sockets as you may mess one up the first time you crimp one.
EDIT: Come to think of it... all you'll need are the metal pins and metal sockets as the plugs are re-usable. No need to comletely replace.