I recently purchased a universal o2 sensor, however it came with no instructions, so I do not know which wires connect to which.

The engine harness had 4 wires, and they were orange/black, yellow/black, white/red, and green/blue, and they matched up with black, black, white, and green on the stock o2 sensor, respectively.

However, the color of the wires on the new o2 sensor are black, white, gray, and gray. Any help on figuring out which wires to connect would be appreciated.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pyrojeff &raquo;</TD></TR><TR><TD CLASS="quote">I recently purchased a universal o2 sensor, however it came with no instructions, so I do not know which wires connect to which.

The engine harness had 4 wires, and they were orange/black, yellow/black, white/red, and green/blue, and they matched up with black, black, white, and green on the stock o2 sensor, respectively.

However, the color of the wires on the new o2 sensor are black, white, gray, and gray. Any help on figuring out which wires to connect would be appreciated.</TD></TR></TABLE>

I would gues this...

both the greys = regular blacks on O2 sensor heater circuit control to A6 and O2 sensor heater circuit power to A25/B1 (or any other good switched 12v source)

White = white - O2 sensor signal to D14

Black = green O2 sensor signal ground to D22 (or any other good ground)


I hope this helps and again this is what I'm assuming

 

Thanks... can anyone verify this information?

 

If it's a Bosch Universal, I can give you the diagrams....

 

It's an NTK (NGK).