What does an ignition lead provide?

What does an ignition lead provide?

• A. Ground path for arc
• B. Vibration isolation
• C. Connection from the exciter to the ignitor
• D. Fuel delivery timing

Answer: (C)

An ignition lead provides the connection from the ignition exciter to the ignitor. It is the high‑voltage, insulated conductor that carries the ignition pulse from the exciter to the igniter electrode inside the combustor. The lead must keep the pulse intact despite high temperatures and engine vibration, delivering the energy needed to create a reliable spark for ignition. Without this connection, the igniter won’t spark and ignition can fail. It isn’t primarily a ground path, nor is its main job to isolate vibration or control fuel timing—the latter functions come from other parts of the ignition and fuel systems.

An ignition lead provides the connection from the ignition exciter to the ignitor. It is the high‑voltage, insulated conductor that carries the ignition pulse from the exciter to the igniter electrode inside the combustor. The lead must keep the pulse intact despite high temperatures and engine vibration, delivering the energy needed to create a reliable spark for ignition. Without this connection, the igniter won’t spark and ignition can fail. It isn’t primarily a ground path, nor is its main job to isolate vibration or control fuel timing—the latter functions come from other parts of the ignition and fuel systems.