Operation CHARM: Car repair manuals for everyone.

Ignition Cable: Description and Operation

SPARK PLUG WIRES
The secondary (spark plug) wiring used with the ignition system withstands very high temperatures, thus providing an excellent insulator for the high voltages generated by the Ignition Control (IC) system.

SPARK PLUG BOOTS
The spark plug boot forms a tight seal on the spark plug. The boot should always be twisted one-half turn before removing the secondary wire from the spark plug.