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Diagnostics-Checking your Coil
How to check Dual Fire coils (Pre TwinCam):
The ignition coil will need to be unplugged from the wiring harness at the point where the smaller wires connect to the coil. Once those are un-plugged from the coil, use a ohm-meter to test the primary and secondary windings.
To test the primary windings, connect the ohm-meter to the points on the coil where the wiring harness connected to the coil. The primary resistance should be about 3 ohms.
To test the secondary windings in the coil, put one lead from the ohm-meter to each end of the spark plug wire connections. The secondary winding resistance should be about 13,000 ohms.
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There's drones in my livingroom! 
'05 Carbed Night Train
111 rwhp, 112 rwtq
Best 1/4 ET 12.557s
Best 1/4 MPH 108.59
Last edited by Kainam; 06-28-2009 at 04:09 PM.
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2005 Harley Davidson FXSTB Night Train
El Cholo
Linear Mode
