Japanese Subaru High Tension Cable No.1

Spark plug wires?(also called?high-tension leads) are electrical cables used by older internal combustion engines to transmit high-voltage electricity from the distributor to the spark plugs . Tension in this instance is a synonym for voltage. High tension may also be referred to as HT.

Many modern engines use coil-on-plug-ignition, a design that does not use spark plug wires.