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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During Sally Yates's 2015 confirmation hearing for deputy attorney general, Sen. Jeff Sessions (R-Ala.) questioned whether Yates was prepared to say no to the president if necessary. Yates was fired by President Trump Jan. 30, after refusing to enforce his controversial travel ban executive order. (Monica Akhtar,Deirdra O'Regan/The Washington Post) There's no problem with Trump White House officials disagreeing with the past administration's stance on immigration. That is, of course, their right.