Autometer Cobalt A/F Gauge Help

[ZooKs]

aight ive seen plenty of a/f gauge instructions that have 3 wires to them and they hook it up to the ECU but i just dont see how that works with this 4 wire set up and in the instructions dont mention it at all and pretty much just say "hook up the o2 sensor" but the sensor has 4 wire and i dont know which one to tap it into, and it has 2 black wires in it so... :\ If anyones used this type of meter or know how its suppose to be set up any advice would help.

It also says hook red wire to 5 amp ignition switch, wouldnt hookn it to say the positive of any constant hot wire work? but it also says the white goes to pretty much same thing so kinda confused.

 

[-silencer-]

My 95 GSX had an Autometer A/F gauge in it when I bought it and I removed the gauge and sold it since I'll be getting a wideband O2 anyway.. but from what I remember, there is a positive to the illumination and ground for the light in the gauge, and a constant positive and signal wire. I believe the signal wire was blue - that goes to your O2 wire from your ECU (look at vfaq for correct wire from ECU), the white wire was connected to the illumination power for the gauge's light, red wire was constant power, and black was ground. This wasn't a Cobalt model though so I'm not sure on the colors for that series..

 

[mirkoelek]

black -------------------------------Ground
red ---------------------------------Ignition 12v (ECU pin 25 or 12 ..)
grey (i think that was the color) ---To O2 sensor (ECU pin 76)
white (iluminator for your reg gauges) , you can find thins under the potentiometer for iluminator.

ECU pinouts