I have a 1989 firebird formula with a 5.0L 305 tpi engine. On the passenger side of the engine down at the bottom there is a wire it can be seen here http://www.facebook.com/photo.php?pid=32055544&l=c27bbc5b05&id=1280743137 I am told it could go to the erg sensor or the knocked sensor. Thanks for the help