The Nissan Path

Ever since i installed my new stereo, i can't get any radio stations when i scan or if i seek for a station it sounds horrible. Any idea what might be causing this horrible radio reception? any pictures on what wire/s to ground and where?
thanks
rs

How does the CD player work on this new stereo? Does it work fine? You may have a bad connection to your antennae. As far as where to ground the stereo, you can just ground it to the same place that the factory stereo used.