WIERD- EGT wires disappearing!

[Eatoniashoprat]

Hi, I've recently started doing the wiring for my Ej20 turbo conversion. I've done this before with my van but I found something interesting this time that I thought I would share and see if anyone else has seen this.

The engine: 1989 JDM EJ20g turbo, first year for this engine, only came out in japan.

There was what looks like an EGT sensor right after the turbo. Its not an 02 sensor because that is in the up-pipe. Now, the interesting thing is that my diagram shows nothing of an EGT sensor. so I followed the wires coming from it and as far I can tell, they go nowhere! They go into a plug, and the plug that it goes to doesn't have those pins. This is also the case with one of the three temperature sensors on the upper coolant manifold, the single prong ones, it goes to an empty plug. So they installed an EGT sensor but didn't use it? What's the deal?

Am I making a mistake anywhere? I followed the wires several times. The only thing I can think of is maybe I'm connecting the wrong plugs, but there are no other plugs that match it. From my experience every plug on a subaru is different. Please correct me if I'm wrong.

Thanks for any help, or comments. My guess is I will find out more when I get down to the final stages of selecting which wires I need and which I don't, but its not looking like it right now.

Mike