Check the wiring harness connected to the coil for signs of chafing, fraying, or loose connections. To do this, you will need to remove a spark plug and reattach its wire to the coil.
Step-by-Step Guide to Replace Your Harley Davidson Ignition Coil
Examine the unit for any cracks in the plastic housing, as these allow moisture to enter and destroy the internal windings. The engine cranks but fails to start, indicating a total ignition failure.
Over time, the harsh environment under the saddle exposes the coil to heat, vibration, and moisture, which can cause external damage. Refer to your specific Harley model's service manual for the exact resistance specifications, as these vary significantly between years and engine types.
Step-by-Step Guide to Replacing Your Harley Davidson Ignition Coil
Cleaning or securing these connections can often restore full function without replacing the part. Typically, you will test the primary and secondary windings.
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