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#288321
frankr
Participant

    The two (or three) large coils are called “charge coils” because they charge the capacitor in the ignition power pack.  Not to be confused with battery charging.   The other coils are “alternator” coils for charging the battery.  The two or three yellow wires lead to the rectifier for battery charging.  Two yellows for single phase alternator and three yellows for 3-phase systems.