[Aredubjay]

First, check the small body ground (the "thin" black wire going from the neg terminal to the body, just in front of (between the headlight and battery). If the body side of the little "eyelet" connector is rusty, or loose, clean it and tighten it. Check to make sure you didn't, perhaps, break a post (try wiggling the cable and see if the post flexes). Double check the connections to your alternator. Make sure they're tight and clean. Check the condition of your fusible link (in the fuse panel under the hood). I had electrical problems with my car when I first bought it and found that some eediot had replaced the fusible link with a piece of copper wire -- damn near set the fuse box on fire.