what could be running my battery down

I purchased a 2002 sc1 last week and the battery was dead the next day and for next five days .I purchased a new die hard and it still dead the next morning. Has anyone had this problem?

Does it crank or do nothing at all when you try to start it? This will help a lot. Any clicking? Check wire connections at battery; make sure they are tight and aren't corroded. Check all your fuses.

make sure none of the lights are staying on, including the trunk light.

otherwise, you will need a multimeter/ampmeter. or the getto way of doing it, pull 1/2 of your fuses, if the next day the battery is dead, the next night pull the other haft, which ever haft is draining the battery, the next night pull 1/2 of the 1/2, continue doing this until you are down to one fuse.

no thank you for that. to complex and slow for me, give me a multimeter and i'll do the same job in 20 minutes.