Thread: Mmdc
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Old 08-14-2012, 04:31 PM
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ricford ricford is offline
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Join Date: Feb 2011
Boat: 1996 Prostar190
Location: Muskoka, Canada
Posts: 309
Use a multimeter and check the voltage across the battery. When boat is off, it should read about 12V. With the engine running it should be around 13.5V or so. If it's reading low when running I would guess alternator.
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