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IGNITION COIL

An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system which transforms the battery's 12 volts to the thousands of volts (20 to 30 thousand volts or more) needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor to reduce the voltage and some rely on a resistor wire or an external resistor to reduce the voltage from the car's 12 volt wiring flowing into the coil. The wire which goes from the ignition coil to the distributor and the wires which go from the distributor to each of the spark plugs are called spark plug wires or high tension leads
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