i was wondering where the oem ecu ground wire, pin#13, terminated on the car?

i want to have my wideband gauge ground wire terminated @ the same location.

TIA

 

I believe it is terminated behind the passenger side kick panel and up a bit, about half way up the glove box height if I remember properly.

 

^ i crawled under the dash & saw 2 black wires with gold dots going to through the firewall & being terminated in front of the battery on the drivers side.....along with a bunch of other ground wires.

i am refering to ecu pin #'s 13 & 26. per aem, they are ecu ground wires.

i want to ground my aem uego to the same point as the ecu, in attempts to alleviate a discrepancy between what the uego say's & what is observed within logged data.

 

That is what the 02 gain is for. Again look on the passenger side there is a ground point where a few wires terminate, I believe that is the ecu ground.

 

i know, but sometime the 2 are bang on & oher times the gauge & ecu are ~0.2-0.4 different not something i care for while tuning on 91 octane.

i will. but according to aem, the 2 ecu ground wires are pin 13 & 26. i followed those wires to the grounding area near the battery. i will look again for the wires your describing...

 

according to the aem wiring .pdf, the ecu ground wires are #13 & #26 = black with a gold dot.

i did find wires in the kick-panel area, however they are black with silver dots.....i didnt find any black wires with silver dots coming out of the ecu?

 

So just tap ground pins 13 & 26 from ECU to wb for ground?

 

To answer this for people in the future, The ECU grounds (pin 13 and 26) terminate at grounding location #4, which is the grounding location behind the battery on the side of the strut tower.