It went to the driver side of the transmission originally, mine hung about straight down from the firewall with nothing in the enigne bay.
It will take forever to load here at work to link a pic but if you go through my build thread right after I got the 2.8/A4LD pulled you can see the connector hanging down on top of the radius arm crossmember.
I went under the truck and the only wire i could find hanging down was the wire for the speedo thing that goes into the transfer case. Where does the NSS wire lead back to? I hope the previous owner didn't ghetto rig something.