air/fuel ratio gauge install

[markalishous]

I have purchased an air/fuel ratio gauge and am curious as to where to wire the signal wire from the gauge to. i was thinking that i could wire it to the heated oxygen sensor signal wire. will this give me the correct reading that i am after? if so does anyone know the colour of the signal wire off of the sensor?

cheers guys

[zedd82]

Usually the gauge has it's own O2 sensor that gets installed into the exhaust

[debonaire]

AFR gauge is basically useless without a wideband O2 sensor. Factory O2 sensors do not have the resolution required to make them work accurately. If you are concerned about your ratios being out, Jaycar do a cheap kit that
lights up LEDs to tell you if its dangerously lean or rich. Better still, just take the car for a proper check if you think its wrong.

[Speedie]

Using a narrow band is no good. You need a wide band with its own sensor