5 ohms, while the secondary winding shows a much higher resistance, generally between 6,000 and 18,000 ohms. This small, cylindrical component is responsible for converting the battery's low voltage into the thousands of volts needed to create a spark at the spark plugs.
Harley Davidson Ignition Coil Moisture Damage: Causes and Solutions
This surge is directed to the correct spark plug at the exact moment dictated by the engine's timing. Testing for Spark Resistance tests are highly accurate, but confirming that the coil can actually produce a spark is the ultimate verification.
Over time, the harsh environment under the saddle exposes the coil to heat, vibration, and moisture, which can cause external damage. A reading of infinity (OL) indicates a broken wire, while a reading of zero suggests a short circuit.
Harley Davidson Ignition Coil Moisture Damage: How to Spot and Fix It
A digital multimeter set to the Ohms (resistance) function is required to measure the integrity of the coil's windings. The engine cranks but fails to start, indicating a total ignition failure.
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