Battery Draw Test Procedure

Hey guys...i've had this problem lately with my battery going dead after just one week of the car sitting. I just went out there to start the car now and it was completely dead. The car has a 130A 3G alternator on there with all the appropriate wiring...and the car charges fine when running with no accesories on. When in turn the lights on however, i can see a noticeable draw in the bat voltage.

I was wondering if anyone has a good parasitic draw test procedure for identifying circuits that may have problems. I was thinking to just use a DMM to test the voltage at the battery posts. I'm expecting to see something less than 12V obviously. Then i was thinking to start pulling fuses until voltage draw stops. Does anyone have any other ideas or procedures for tracking down problems? Thanks in advance!

Jake...thank you for the information. That was very helpful. So instead of testing the voltage across the bat, i should be testing the amp draw through the circuit. Do you know if the headlight and taillight circuits are on the same fuse? or if they are even fused at all? Thanks again for the help!

no its not anything simple like a light staying on...i have checked all those possibilities many times. I think this is probably an exposed/grounded wire that isnt supposed to be. I have been doing some reading about how to test for parasitic draw...i will try it tomorrow and see what i come up with. thanks again for the help guys...