http://www.speedhut.com/custom_gauge...number-870.htm
This is the guage I got.
My friend is helping me install a air fuel gauge in my 08 GT & I need help on knowing what to wire it to.
Yes I have used the search & Google.

 

you should be able to wire it to this

http://www.innovatemotorsports.com/products/lc1.php

if not then i might look for a different gauge.

EDIT: Ok i just looked at the extra pictures and it includes a wiring harness to attach to a factory O2 sensor but the connector looks like a molex and our cars do not use that kind of connector. But i think you can modify that harness but do not modify the O2 sensor harness.