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Testing Stock CDI and Magneto/Alternator with Ohm-meter

Motorized Bike Forum :: Motor Database :: Electrical Database

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Testing Stock CDI and Magneto/Alternator with Ohm-meter

Post by DuctTapedGoat on Fri Jul 22 2011, 06:30

Magneto/Alternator

Set scale to 200 Ohms

Black Wire to White Wire = ~2 Ohms
Blue Wire to White Wire = ~300-400 Ohms





Stock CDI Coil


Set Scale to 200K Ohms

Blue Wire (+) to Black Wire (-) = Infinite (no activity)
Black Wire (+) to Blue Wire (-) = ~130K-150K Ohms
Spark Plug Wire (+) to Blue Wire (-) = ~135K-155K Ohms

Set Scale to 20K Ohms

Spark Plug Wire to Black Wire = ~2.5K-2.7K Ohms

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