SailNet Community - View Single Post - beta marine BD722 tach acting very very strange!
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post #4 of Old 07-28-2011
donradclife
Don Radcliffe
 
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As the tach input is from the alternator, check to see if the alternator is charging properly--you may have messed the wiring up when you changed out the battery. It depends on how the alternator regulator is wired, but generally it will only turn on the alternator when it sees a load. If it only sees a load when you throw one of the panel switches then maybe it is not hooked to the battery.
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