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o2 sensor 2 black wires???

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Old Feb 11, 2007 | 02:35 PM
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01G_WRX_02
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o2 sensor 2 black wires???
The o2 sensor is 4 wires Blue,white, black and black. Now what does each do?? Mainly what do the 2 black ones do are they both grounds??? and does it mater if there mixed up??
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Old Feb 11, 2007 | 04:39 PM
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on the evo blue is signal , white is ground, 2 blacks are heaer wires
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Old Feb 11, 2007 | 04:45 PM
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Blue +1
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Old Feb 11, 2007 | 04:46 PM
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so does it matter if they get crossed, a while ago i exetended a sensor and might of mix them up, nothing bad so far......
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Old Feb 11, 2007 | 06:37 PM
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Originally Posted by chokeX
so does it matter if they get crossed, a while ago i exetended a sensor and might of mix them up, nothing bad so far......
this is what I did too. If you don't have a CEL then I guess it doesn't matter.
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Old Feb 11, 2007 | 06:42 PM
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From: houston
Originally Posted by evo loco
on the evo blue is signal , white is ground, 2 blacks are heaer wires

agreed, the two black wires do not have polarity, just make sure you get the blue and the white hooked up correctly, and the two black wires can be interchanged.
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