While poking around my engine bay, I found that the wiring to this sensor was severed.  Problem is, I can't figure out what sensor it is.  Going to be fixing it soon, just need to run to the junkyard to grab a connector off another EA82T and splice it in. 

 

It's the sensor circled in red.  Behind intake, next to bell housing.  Knock sensor?

 

Pretty sure your right about it being knock sensor

Thanks.  I was looking at a GL-10 at the local junkyard, which also had an EA82T, and it didn't seem to have this sensor.  Seems odd that different generations came with/without a knock sensor.

the knock sensor is more slim... but also is the only electronic cable that belong to that part of the engine....

85/86 flapper MAF type use a 2 wire Knock sensor.  Round connector

 

87+ Hotwire MAF uses a one wire. slim round connector

 

The CTS is in that area too.  square 2 wire 

Thanks, guess its a knock sensor then!