So I'm having difficulty with the gauge, when i hook it up to the black/white wire coming from the O2 sensor at the front, but i didn't do it at the PCM/ECU, I did it closer to the sensor. I'm sure it's the right wire, but when i hook it up i get no lights on the gauge, except for when i open the throttle up a lot I get one red bar on the left side. When i unhook it, i get one green bar on the right side, i can't remember what side is what. The gauge is the autometer sport-comp A/F ratio gauge.