air/fuel meter question

OK, I bought an auto meter air/fuel guage. I got everything wired up and it seems I run lean all the time so I'm guessing that I wired up the sensor wire wrong. does anyone know which wire I'm susposed to connect it to? the book I bought never really explained which color of wire to hook it up to so I sorda gave it the old college try. right now I have it hooked up to the grey wire with a red stripe. also, does it need to be wire right at the O2 sensor or can I hook it up in the engine bay wire the wire is easy to get. right now I have it connected to the engine bay. thanks guys.
 
95strokerPSU said:
Supposedly that gauge is more of a light show then an accurate tool. You'll need a wideband to get an accurate reading.

But above is the correct wiring.

Yup, complete light show.

A wideband O2 sensor is made to detect air/fuel at other a/f ratios other than 14.64, which is what a regular O2 sensor is made for.
Scott