Something is draining my battery while the car is off, I changed out the alternator but that did not solve the problem, I removed all the fuses one by one and the battery is still getting power from something else, I hear a clicking sound possibly coming from the computer brain box....this started about 2 months ago when my instrument panel went completely out, shortly thereafter the battery was dead, went and purchased new battery in Dec 2012 now 6 weeks later it is draining again... I don't know where to turn how to ascertain what the problem is