Has anybody had any problems with car alarms in their mada's? I purchased my mada in July 05 and recently the alarm has been going off like crazy. My alarm, which was installed by Nissan, is not one that goes off from vibration or audio. My best guess is that there is a short somewhere causing the alarm to go off, what seems every 10-15 minutes. What is weird is that it only goes off at night. I know that nobody is messing with it because it is inside my garage.