oh, thats from svttour eh? between that and the instructions from the kit (and maybe a few other comments found here with a quick search), you shouldnt have any problems. i used the two. look for an old install thread that i brought up as well.
sams how to uses the location in the head. the head is much easier to get too, but is less accurate than the one behind the AC. i may move mine eventually ( i used the location in the head under the TB) when im under there anyway. the plug behind the AC is much harder to get to, but is a much more accurate location.