Spark plug wires, aka ignition wires, aka plug wires connect the spark plugs to the distributor or ignition coils. Spark plug wires are not like your normal wires. They are different by design. Electrically speaking, you might say they were born to resist. The main reason for this resistance is so you can listen to your car radio in peace without all that static. The resistance in the plug wires reduce radio static generates by the ignition system.