there should be fuses on the wires that go to your ignition harness if you look under your dash i think you'll be able to see them. i wouldn't think a fuse would make it flake out since it'll be blown or not. i wouldn't think the rumble of lighting will harm the alarm unless the rumble was so loud that it somehow harmed the shock sensor. if not i would think black widow has an lifetime warranty on their alarms.