This is a very good link to explain how to check for a draw. Be sure to read some of the questions and the answers at the bottom, could clear up some confusion for you OP.
That said I'm going to tell you what the first rule of electrical trouble shooting is! CHECK THE EASY THINGS FIRST. So I'll give you a short list of EASY THINGS.
1. With the car running, check that the voltage at the battery is around 14V, and then with the car off(battery charged) the voltage should be 12.7 ish.
2. Have the battery tested! I don't care if it's one week old, one day old, or 3 years old, have it tested! New doesn't mean good, it means you just bought it.
3. Look at the battery cables very closely, make sure they aren't dirty or rotten, if they are, fix it!
One more tip that is strictly a 3rd gen thing. My wife's 2000 had a dead battery one day, I started it drove it around and tested the battery, it check out fine. Next day it was dead. I started to test for a draw and I had a big one, when I went to start pulling fused in the Engine Bay fuse block, I noticed a relay was very warm. I pulled that relay and the draw was gone. That was the rear defrost relay and it is controlled by the Body ECU. It grounds the relay when you turn on the switch and in this case was grounding it ALL the time. It's still broken but this is California, we don't need not stinkin' defrosters!
:cheer2:
