help identify this transmission. Supposed to be A518

Believe it or not the hardest things to find with my last transmission what's the 3 pin plug that goes on to the trans. it's the plug on the Harness side. I have tried everywhere I can think of to get 1 and just can't seem to find one does anyone know where I can find one cheers

PATC has all the plugs and kits :

http://www.transmissioncenter.net/SwapInformation.htm