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Hi Newtz, I've just installed one myself. Maybe my story will help.

Situation:

The threaded port for the EGT probe in my exhaust system was 1/4 NPT, the EGT probe was 1/8 NPT.
Wiring didn't...

Here some pics of my rear door table ( sorry for the crapy pics as they are taken on my phone camera ):

http://i142.photobucket.com/albums/r87/bigmanwaz/camerapics18-06-12016.jpg
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