I have a sound coming from my trunk. It is a repeated clicking sound. It only starts when I turn off the ignition when i turn on the acc power it stops. I removed fuses one by one and I found that it is related to the radio fuse. I am guessing there is an amp in the trunk or something like that? I am afraid my battery is going to drain so I remove the fuse everytime I get out of the car and well I am getting tired of doing that. Does anyone know why it might be doing this and how to fix it?