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what wire do i hook it up to? i know its the o2 sensor wire but which one is it? theres 2 white, 1 black and a grey wire
ive searched but no one has said which one it is
thanks a lot
James

 
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u prolly wanna take it to the pro, i mean u dont have to let them put it on...maybe ask them....

 
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Wire it lower; to the white with black stripe on it just after the connector off the header

 
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i think it depends on whether you have a sedan or coupe. i have a sedan and the sensor is tapped into the black wire, that's the only one that would make the gauge work right. but i've been hearing white with black stripe from people, which isn't even an option for me. so if you have coupe, go with the white with black stripe, if you have sedan, go with black.

 
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This picture should help you you.....



as you can clearly see its the black wire on the 1st and 2nd o2 sensor. I believe the a/f gauge should be hooked the the first o2 sensor. Later...

 
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i thought that it measures the voltage return from the sesnsor though?

 
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white with black wire I will try to get a picture of it this weekend. btw what do you need the gauge for? anything fun on the car?

 
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NOS 75 SHOT
NOS PURGE
INTAKE
HEADER
EXHAUST
NEW PLUGS

 
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cool the civic that i will be taking pictures of the af o2 hook up has n2o. 50 shot though. good luck.. pretty crazy putting a 75 shot on without a egt or atleast a a/f.