Narva 4 Position Ignition Switch ​​​​​​​Product Code: 64018 Metal construction with push on terminals. Supplied with two encapsulated keys Spring return action for start. Mounting opening 25mm dia. Amperage ratings at 12V, 15A Accessories, 25A Ignition, 12A Start Building steadily on its ever increasing switch range, Narva has released an all new series of ignition switches covering petrol, diesel and marine applications. From standard on/off ignition and to 5 position diesel ignition with pre-heat. Part No.