# O2 wires Sr20
**URL:** https://forums.speedlife.net/t/o2-wires-sr20/96087
**Category:** SON240sx Automotive
**Created:** [May 18, 2006, 6:48am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087 "2006-05-18T06:48:08Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [May 18, 2006, 6:48am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/1 "2006-05-18T06:48:08Z")
Hey, what are the colors of the 3 O2 wires in the Sr20 Harness, I had a problem and i need to look for them and tap off them.
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### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [May 18, 2006, 7:45am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/2 "2006-05-18T07:45:34Z")
I know that on the sensor the Black is Signal and the 2 White are for the heater and it ground through the body of the O2 in the Elbow, so I just need to know what is the color of the O2 SIgnal with in the harness and what 2 colors are for the heater power
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### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [May 18, 2006, 9:04am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/3 "2006-05-18T09:04:37Z")
ok so I found out that the O2 Signal should be White and in Pin 19 but I still do not know what ones are the two power for the O2
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### Author:  [@240sxfan](https://forums.speedlife.net/u/240sxfan)
#### Post date: [May 18, 2006, 11:05am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/4 "2006-05-18T11:05:15Z")
on the harness it should be:
thin black, thick white, thin brown
Black = ground
White = signal
Brown = power
Please correct me if i’m wrong
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### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [May 18, 2006, 11:19am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/5 "2006-05-18T11:19:40Z")
Tanks man, That should help me
that only problem now is that which white wire on the o2 is power and which one is Ground, hell does it even matter as long as there is a current going through it??
why the hell would they make the black on the O2 the Signal. Crazy people
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### Author:  [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)
#### Post date: [May 18, 2006, 7:18pm UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/6 "2006-05-18T19:18:33Z")
Did you get a O2 for your bunghole ? :lol:
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### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [May 19, 2006, 5:24am UTC](https://forums.speedlife.net/t/o2-wires-sr20/96087/7 "2006-05-19T05:24:34Z")
hahaha Bunghole that is like BumHole, na I am going to take car of everything next week when I get back home.
Ill Kepp you updated Jeff, when I have it all tuned up we will go for a rip