It looks as if there was a change between the 09 and 10 nav units. I looked at the g37 hack but it matches the 09 model service manual. The issue is that the 10 model doesn't match it. Here are some pictures i took. As you can see there is no pin 36/38 matching the color or location. The connectors arn't even the same.
http://www.cmw.me/nav1.jpg
http://www.cmw.me/nav2.jpg
http://www.cmw.me/nav3.jpg
http://www.cmw.me/nav4.jpg