I checked the archives and could not find an adequate answer so......I just bought an air fuel ratio gauge and all I need to know is which wire off the O2 sensor do I need to hook it up to? I have a 2000 prelude.

 

If its not digital.....throw it away. It'll do no good. All its going to tell you is that its running rich.

All preludes run rich from the factory. Or do you just want the looks?

 

its there in the searching....its also there in the manual, just find the pin on the ecu, it will be easier to wire it over there than underneath the car...

 

It's for looks right now until I get aem ems w/ a wideband. I just need to know the color of the wire.

ps I have a chiltons manuel and it sucks because it doesn't have a wire diagram for the ecu.

 

yes it does, you should look under prelude engine or chassis wiring
it has a diagram of every single pin on the ecu

 

Should be the white wire (pin #7) on the ecu "D" connector.

 

Thanks, your the first one to give me a straight answer on this forum.