I had a constant drain that would kill my cars battery after 3 days of not driving it. I had one garage look at it and they said they could not find the culprit. Randomly I decided to try my stereo by pulling the fuse for it. To my surprise it worked. No more battery drain. How do I determine what part of the system is no turning off? I am guessing it is one of the amps... Does anyone know the draw I should see on these and also do I hook an amp meter to the positive wire on the amp and touch it to a ground point on the car to check it? Thanks