Ok, I have a pinout of OBD2 ECU, but when I searched I saw a lot of threads saying that the O2 wire from the ECU was white. When I look, my secondary O2 is solid black, and the primary O2 is black with a white stripe, so is the black with the white stripe the correct one...just need a straight answer. Don't want to mess anything up. Thank you.

 

I really bet your just not looking at the right wire, get a helms, I would'nt use all of this technical jargen flying around here

 

the primary o2 signal wire is the wire on the harness side that is shielded. locate the shielded wire on the harness side and trace.

 

Thanks guys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">the primary o2 signal wire is the wire on the harness side that is shielded. locate the shielded wire on the harness side and trace.</TD></TR></TABLE>

hows that supposed to help? All the dist wires are also shielded, as is the knock sensor.

 

go to the connector at the primary o2. about 3" away is the shielding. thats how.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">go to the connector at the primary o2. about 3" away is the shielding. thats how.</TD></TR></TABLE>

About 3" away is a jacket over ALL the wires, yes.. But ONLY the signal wire is shielded. Tracing that through the harness would be a pain in the ***. Why not just get a pinout of OBD-2 ECU plugs and find the exact location that way? Seems a lot easier to me.