2001 chev s10 pick-up 4.3l battery goes dead over night. I check the draw with a test light, and started pulling fuses. The light goes out when I take the 15amp out that is on with int bat. The radio goes out and the dash lights to with that fuse. Also there is a 50amp under the hood to, and the same thing happens when you pull it out. Also I pulled the radio out to see if that had draw. When I unplug the radio the test light started to blink, when I plug it in it stopped but the light was still on. Can you help me. Thank-you. Also I have check the charging 14.0volts and load test to.