Most viewed neeya naana episodeHow To Test Ignition Switch With A Test Light. Step 1: Disconnect the module's wire connector after turning the ignition switch off. Also, disengage the starter solenoid's S terminal. Doing so will stop the engine from cranking despite turning the ignition key to the run position. Step 2: Rotate the ignition key and place it to the run ...CamerabeeldenJan 03, 2019 · The thyristor is an electronic switch which requires a very small current to control its status or to trigger it. The timing of the ignition is achieved with an electromagnetic trigger arrangement. The electromagnetic triggering consists of a rotor (typically attached to the crankshaft), and two-fixed pole electronic magnets.