I have blown a couple of them over the years. Mine seem to have blown when I forgot to turn on my main battery cutoff switch before turning on my ignition switch. If I turn on the ignition switch then turn on the battery cutoff switch, I'll hear a pop then the gas gauge wont work. I cut open the blue insulation on the burned out ones to find that usually its one of the little brown capacitors or whatever they are, that actually crack apart.
