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Voltage reading on Garmin? - SaltwaterCentral.Com
Voltage reading on Garmin? - SaltwaterCentral.Com
Voltage reading on Garmin? - SaltwaterCentral.Com
May 26, 2018 2:10 pm EST
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Voltage reading on Garmin? - SaltwaterCentral.Com
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Voltage reading on Garmin?
 
 
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BarryTurano
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PostPosted: Sat May 12, 2018 8:16 pm    Post subject: Voltage reading on Garmin? Reply with quote

Here is a strange question. My voltage display on my Garmin 740s reads about 11.1 to 11.3 volts. My volt meter is showing 14.4. This only started after I had my battery switch replaced with a Blue Sea System Battery Switch ACR. Is the display showing the voltage that the Garmin is using? Is this normal? Note that I did not do the wiring it was done professionally. I don't mess with stuff that I am not 100% sure of. Thanks for the help.
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Bosunscrew
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PostPosted: Sun May 13, 2018 2:53 am    Post subject: Reply with quote

Barry...mine did the same thing when I switched battery switches 🤷‍♀️
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BarryTurano
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PostPosted: Sun May 13, 2018 12:58 pm    Post subject: Reply with quote

Thanks Dustin. I guess it's normal.
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glacierbaze
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PostPosted: Sun May 13, 2018 2:28 pm    Post subject: Reply with quote

Where are you taking the meter reading?  
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BarryTurano
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PostPosted: Sun May 13, 2018 5:28 pm    Post subject: Reply with quote

Not talking a meter reading. Just a gauge on my dash. Trying to figure why the voltage on the Garmin is so much different than the dash board gauge.
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BarryTurano
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PostPosted: Sun May 13, 2018 5:29 pm    Post subject: Reply with quote

Not talking a meter reading. Just a gauge on my dash. Trying to figure why the voltage on the Garmin is so much different than the dash board gauge.
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MealOnReels
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PostPosted: Mon May 14, 2018 12:07 am    Post subject: Reply with quote

The volt meter on dash may be the starting battery and the garmin is on the house battery  
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BarryTurano
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PostPosted: Mon May 14, 2018 12:34 am    Post subject: Reply with quote

MealOnReels wrote:
The volt meter on dash may be the starting battery and the garmin is on the house battery


Kind of what I am thinking. But shouldn't the house battery show more than 11.2 volts?
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MealOnReels
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PostPosted: Mon May 14, 2018 12:44 am    Post subject: Reply with quote

Depends on the battery and how many accessories are drawing off of it. 11.2 does seem low  
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BarryTurano
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PostPosted: Mon May 14, 2018 1:16 am    Post subject: Reply with quote

Going to check without both radios, and fume sniffer, see if the Garmin shows a higher voltage.
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lwr37
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PostPosted: Mon May 14, 2018 10:59 am    Post subject: Reply with quote

At 11.2 volts the battery would be considered dead. It would not have enough amps to crank an engine. I will be home in a couple days and we can take a look at it when we work on the curtains.
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BarryTurano
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PostPosted: Tue May 15, 2018 6:39 pm    Post subject: Reply with quote

What do they say? When you hear hoof beats look for Horses not Zebras. I spoke with Blue Sea Systems yesterday. They told me to take the cover off of the ACR and check for loose wires. They also sent me a testing procedure sheet (attached). Took off the cover and found a ............loose wire on the lead that went to the house battery. Tightened up the connection all is right in the world now. Could not find a Zebra but did locate a horse.
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