The ignition process has two tasks to conduct. First, it should develop a voltage high more than enough to leap across the gap of a spark plug, So developing a spark robust sufficient to ignite the air/fuel combination for combustion. 2nd, it must control the timing of that spark, so https://edgarfpydg.uzblog.net/2017-hyundai-elantra-ignition-switch-replacement-things-to-know-before-you-buy-41259123