I recently bought a 1987 Samurai with a 1.3 liter motor in it. The day i picked it up it wouldn't start unless i started it with a jump box,as soon as i took the jump box off,it went dead.I then went and bought a new battery.I put it in and it fired up and ran well,i drove it all afternoon with no problems. The next day i started it and drove it for 15 minutes and it died.I waited about 10 minutes and it started back up again.I drove for another 15 and it died again.It repeats this process all day. The following day,the battery was dead yet again and it wouldn't start without a jump box on it again! I take it off and it cuts off again! Can someone help me out on this,i'd appreciate it!