I have 2004 civic 1.7 liter, does anyone know where my purple wire on my a/f ratio gauge hooks into? I know into the ecu wiring or the header but what color is the wire?

 

I cant answer your question but I am wondering what you are installing? Can you take pictures? Are you an EX?

 

First, why do you need an AFR gauge, are you running F/I? Is it wideband controlled? If it's not running off a wideband, then it's a completely useless cluster of blinky lights.

 

hey whats up i have a fuel air ratio meter it hooks into the wire on the harness for the O2 sensor it installs on the wire with the voltage reading.5volts-1.5volts back to ground if you probe the wire while it is on that is the only way to tell sorry no wire color can help they are different for year make modle etc.