battery drain

How do you test for this. I have a stereo system with 2 amps. I thought they may be the problem. Battery kept going dead only a year old so the swapped me out a new one and the same problem. So something must be draining the battery. Any suggestions on how to determine what it is. Other than disconnecting one thing at a time and wait several days and see if it is still charged. Also I saw under a posting about a fuel gauge can cause a battery drain. Is this true. This is a 71...

battery drain
Author: Flchallenger