Let me start by saying that I know less about auto mechanics then any 50-year-old man on the planet. My daughters car is draining the battery if it sits for more than a day or two without being used. I mean battery goes d-e-a-d, won’t even play the radio. It starts right back up when jumped, only a few minutes requires on cables. Will start and run fine after that, until she lets it sit over the weekend without using. So I assume there is a short somewhere but where do I even begin to look? Battery is about 2 months old, alternator maybe 4 months old.