Trans Sport Trailer Harness Needed....

Anyone have or know of where i can get one of the OEM trailer harness's for a 97 Trans Sport?? I have been underneath it to check and it has the trailer harness connector just in front of the compressor for the air suspension. From what info i have been able to find they made a harness available that plugged onto this connector and provided a standard trailer plug.

I called a few dealers and talked to their parts departments but got nothing but puzzled responses. Seems that nobody knows for sure what to get. If you even have a OEM part number on this harness that would be a huge help!!