Air/Fuel mixture gauge install?

[ElTiburon]

Just want to know if any one has done or knows wich wire I have to tap into for the O2 sensors and install the air/fuel mixture gauge. since we have two O2 sensors is there a difference or does it matter which one I tapp into. Please let me know I wish to install it by this weekend since we have a show on sunday. Thanx.

[i8acobra]

See the chart in this post:

http://www.hyundaiperformance.com/forums/topic.php?t=16649

You want to splice into the yellow wire at pin #12 from the ECU. It's the signal wire from the front O2 sensor. Be sure you don't accidentally splice into the yellow wire at pin #39, this is from the rear sensor. You need to use the front sensor, not the rear sensor.

Alternatively, you can run a wire under the hood to the front O2 sensor and splice into the yellow wire there.

However, my personal recommendation is that you go to a parts store and buy a 3-wire O2 sensor, weld a bung into your exhaust close to the collector and use that for the A/F meter instead of slicing into one of your existing O2 sensors.