I know that I should search before asking and thats what I did with no result on how to install the A/F gauge.......Please guys help

 

Well... First install the gauge... power, ground, and then tap the sensor wire into your 02 sensor. It's one of the wires that isn't the same color. i.e. two of the four are the same color, so it's not those... maybe it's the green one... but I don't really remember.

It's that simple.

Matt

 

My o2 signal wire was white in my civic.

 

is this a narrow band? If so it's pretty easy and hey explained it above. Otherwise I can help you

 

If you or someone you know can follow a wiring diagram in the back of a repair manual, you can hook up you lead wire right at the ECU. The repair book will show you which plug and which pin goes to the O2 sensor, tap in to that and you dont have to run any wires through the firewall or under the hood.