What is the purpose of an LT lead in an ignition system?

An LT (low tension) lead in an ignition system serves to carry the low-voltage current from the ignition coil to the distributor or directly to the spark plugs. It plays a crucial role in delivering the electrical signal needed to create a spark, igniting the air-fuel mixture in the engine's combustion chamber. By ensuring proper current flow, the LT lead helps maintain efficient engine performance and reliable starting.