A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto.
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Here Are All the Racist Comments That Got Donald Trump Fired From NBC. Here Are All the Racist Comments That Got Donald Trump Fired From NBC. Here Are All the Racist Comments That Got Donald Trump Fired From NBC. Donald Trump saying something possibly racist during his presidential announcement at Trump Plaza on June 16, 2015 in New York City. Donald Trump is a jackass, but at least he's a jackass without a TV show.