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Old 05-02-2008, 12:24 AM   #1
CSS Performance
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Default wideband wiring question

Ok heres the deal. A friend gave me an NGK afx wideband that was given to him. One problem...the o2 harness was cut off when it was being removed from the trade in car it was originally in. I have a bosch LSU wideband o2 sensor laying around.

I know that they will work with the afx due to some companies selling the bosch LSU with a NGK plug so you can plug it in to a AFX wideband as a replacement for the NGK sensor the kit comes with. My question is this...Where can I find wiring color charts for the NGK and Bosch LSU sensor. They both have 5 wires but the colors are different.

Any help would be great!!!! thanks
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Old 05-02-2008, 03:26 AM   #2
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Ok after searching for a while I found that the bosch is-
Red = Heater +
White = Heater -
Black = Signal wire
Gray = signal gnd
Yellow = pump circuit (that adds or removes oxygen from the o2) corrects things.

Now all I need is what the wires from the ngk afx are-
pink ?
white?
purple?
black?
orange?
I know that they are the same as the bosch but dont know the colors.
thanks
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Old 05-03-2008, 05:26 PM   #3
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I now know that the black is ground
Just 4 more wires to go!!
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Old 05-04-2008, 02:13 PM   #4
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Figured it out. I found a few pictures on Google of the bosch harness and the NGK harness and was able to cross the wiring. Should anybody else need to adapt an LSU bosch wideband to their NKG AFX the colors cross as follows

NGK ---- Bosch
white - red
orange - white
pink - black
blue - yellow
black - gray
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