Airfuel Gauge

[JiN]

Ok, so I guess I'm just confused, and dont know what to even try next. I hooked up my AF gauge a few days ago, and have gotten different results everytime. The first time, I ran the power wire to the "gauges" fuse, in the fuse box by the clutch pedal. The ground was just a random bolt by my cd player. And the o2 line was run to ecu pin 76. Well that time, my gauge would only light up when I gave it some gas, and it would read completely lean. Wouldnt move at all. So I'm driving down the freeway, let off the accelerator for a second, then put it back on, and the gauge shoots up to stoic, then slides back down to lean. That is the only time it would do anything.

The next time, same setup, only I ran the o2 line to pin 75. Which is also a o2 sensor line, only it says "rear" in most faqs. This time, the gauge read totally rich, and wouldnt move at all. Not when I would rev, or when I did the ghetto little trick with the accelerator.

The last time, I ran the o2 line to pin 76. And the power wire is now moved to a power supply on the ecu. Pin 25. Still grounded the same. Checked to make sure that was sufficient everytime I made a move. Well, this time, the gauge reads totally rich, will not move at all. Same as the last time. Only for some reason, when I use the lock/unlock button on my door panel, the thing flashes for a second. Then goes right back to rich again. So with that said.....WTF??? :blink:

Thanks for the help...

Rickey