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Found some information that will help, if anyone has a coil out they can measure or knows the wiring this will tell:
Three terminals on coil could be either smart or dumb coils.
If dumb, it would be:
12v, ground, and the coil negative signal from an ignition driver inside the ECU.
If smart, it would be:
12v, ground, and the dwell/timing pulse.
Also, a dumb coil will have low resistance between coil positive (12v
pin) and coil negative. Should be less than 1 ohm.
Anyone able to assist with this information?
Regards,
Sam
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