Tracking down a short

HEY all. Just a quick update. I used a test light, pulled the assy/radio fuse (cus I know that drawed power). The started to pull each fuse one at a time. Light never went out. At times it did get dim but not as I pulled a fuse, like whatever was pulling the juice was intermittent. After the fuses pulled the relays. Still had light. So for my next check, I charge the battery then disconnected the alternator wire. It has been for days. When I got home from work the van started right up. So I THINK it may be a bad diode. I just wanna thanks all for the help.