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16-02-2019, 09:40 PM | #1 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,349
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You can get electrical whine, it will occur only when the charging system is connected up - hence testing with the alternator leads off, and the motor just running on the battery. No whine then, means diodes usually.
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