ANOTHER--help with wire identify *pics*

[Slick92GS-R]

help on my other was great!! -

this is a '88 'i' harness & motor into 87 ETA--

on the DRIVER's side, under the throttle body there is a plug (yellow circles) that is joined on the harness to two others. i need to know to what does the green circled plug connect to? it is the longest wire on that section of the harness





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does the plug in the blue circle connect to the o2 sensor ?..
is there a use for the green circled plug in my application ? i see nowhere to connect that circle plug

[mcgrath]

First pic. The plug goes to the idle control valve. On the later motronics they got an updated ICV which is right there at the throttle body. It uses a 3 pin plug just like that.


Second pic. The blue circled plug I am not sure about. I will look at my car when I get back home from work around 6:30.
The green circled plug is for your O2 sensor.

[mcgrath]

So what are you doing? A full motronic 1.0~1.3 swap. If so, welcome to the club. :)

[rs4pro3]

blue circle is your 3-wire o2 sensor plug
Green circle is your new 4-wire o2 sensor plug
Red circle is a ground

[Slick92GS-R]

man, i luv this !!1 great info -- yeah.. its a '87 ETA chassis that i have. i'm swapping an 89 i motor, dme & harness -- it has like 41000 miles on this new motor..