battery keeps dieing

If the battery keeps dying you're either not charging properly or you are pulling current when you think everything is off. I had a similar problem a few years ago and one night I went out to the car and noticed the glove box lamp was on. It turns out the switch was bad. You can diagnose it easily with an ammeter. Pull either cable from the battery and put your meter in series to see if you're pulling any current. It should read zero amps unless you have a clock or radio needing milliamps of current to keep something alive. I do agree with others above to start pulling fuses to isolate the circuit if you do have a current draw.