OK here's the problem. My friend has a 83 733i, when she first got the car it ran great for about 2 weeks. Then it just up and died. So i replaced the battery cables (both POS and NEG) and checked a lot of the connections. We put a brand new battery in it and it has ran great for about a month now. This morning she went to start it and nothing. Is there something draining it or what. I have no idea WTF is going on!