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Unread 09-09-2010, 09:40 AM   #111
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Default Re: Digital Voltmeter Display Installed

Scotty, I believe I'll just wait to see how those work for you. I might just trash the new one I have and go with one of those better looking meters. I might just hook up my Fluke meter and monitor with it until I find something good enough to cut holes for.
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Unread 09-21-2010, 01:47 PM   #112
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Default Re: Digital Voltmeter Display Installed

Meters of this type cannot share the same ground....in other wordss you have a +and - for you 36/48 volt read...also you have a 12v DC + and - for the working voltage ...these cannot share/have the same ground, or the meter will act funny, cut off or die..you must use a ground isolator in series between the meter and feed (12v) voltage..
The fella whio seels the meters also sells the little black 4 pin isolator...

Bill

http://cgi.ebay.com/DC-DC-Converter-...item563e4c581f
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Unread 09-21-2010, 07:26 PM   #113
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Default Re: Digital Voltmeter Display Installed

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Originally Posted by scubabud View Post
Ever since I really tested the Digital LED Light Meter I installed a while back I was disappointed in the fluctuations of the lights and the fact that I didnít have a true reading of where my battery pack was really at. During the testing I constantly had a voltmeter attached to show the readings while in use. Of course it to had voltages up and down while driving around but once stopped it settled down to give an accurate reading in DC Volts instead of Lights. Bottom line I felt it was time to research dc digital voltmeter displays and prices. On Buggies Unlimited they had one for $79 plus shipping. On eBay I purchased this one for $20.45 delivered. Once hooked up it was off by 2 volts compared to my digital meter but I found a small adjustment screw in the back that put the new digital display right on the money. In the pictures the voltage shows 52.2 but thatís because I just got done charging the pack and it hasnít settled down to the normal 51.3. Very easy to install using four wires, 2 of which I combined for ground, 1 for sensing the actual pack, up to 200 volts DC and the other connected to 12 volt positive to light up the display, (works with voltages between 6-15 vdc.) I also added a toggle switch that controls the 12 volts to the display as well as the accessory port that I previously installed.
Meters of this type cannot share the same ground....in other words you have a + and - for your 36/48 volt read...also you have a 12v DC + and - for the working voltage ...these cannot share/have the same ground, or the meter will act funny, cut off or die slowly or blow..you must use a ground isolator in series between the meter and feed (12v) voltage..
The fella whio seels the meters also sells the little black 4 pin isolator...

Bill

http://cgi.ebay.com/DC-DC-Converter-...item563e4c581f
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Unread 09-21-2010, 07:40 PM   #114
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Default Re: Digital Voltmeter Display Installed

even for a 20v meter, measuring the 12vdc system?......
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Unread 09-21-2010, 07:49 PM   #115
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Default Re: Digital Voltmeter Display Installed

I think you have a 2 wire meter for 12v no? He is refering to the 4 wire meters link scubba has .... I tried 2 and connected it exactly as the man here says using a completely seperate pr. for my 12v source .... but my meter was defective out of the box and is on its way back to ebay. I have another thread about a 2 wire digital panel meter that I am having better luck with.
I costs more but it is doing all this power supply and resistance stuff in a waterproof cube for you
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Unread 09-21-2010, 07:53 PM   #116
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Default Re: Digital Voltmeter Display Installed

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I'm also running a 20vdc meter to measure my 12v system......and I wired 1 and 3 together, and 2 and 4 together......that meter is still working perfectly.....
Nope....4 wire meter....
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Unread 09-22-2010, 12:07 AM   #117
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Default Re: Digital Voltmeter Display Installed

Quote:
Originally Posted by Bill In Georgia View Post
Meters of this type cannot share the same ground....in other words you have a + and - for your 36/48 volt read...also you have a 12v DC + and - for the working voltage ...these cannot share/have the same ground, or the meter will act funny, cut off or die slowly or blow..you must use a ground isolator in series between the meter and feed (12v) voltage..
The fella whio seels the meters also sells the little black 4 pin isolator...

Bill

http://cgi.ebay.com/DC-DC-Converter-...item563e4c581f
There are two problems with the meter I installed...

1st... it's not waterproof so you must seal the back as well as the front plastic lens cover to the black housing with a thin silicon bead.
2nd... the decimal point doesn't last long... defective switch in the back of the meter.

It has the ability for a separate ground as well as using the same ground. I use a common ground... have since March of 2009 and the fluctuations are normal when using your cart. Try it with any good Multimeter and you'll get the same results when driving. The first meter blew... actually my fault... just didn't want to admit it and the second meter is still in my cart.

The cube sealed meter makes the most sense because it's sealed. Hopefully it functions well and has longevity. Best price I saw way back when was around $80.
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Unread 09-22-2010, 12:11 AM   #118
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Default Re: Digital Voltmeter Display Installed

$50 ~ I loved the 2 wire connection... Time will tell the rest of the story.
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Unread 09-22-2010, 07:53 PM   #119
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Default Re: Digital Voltmeter Display Installed

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$50 ~ I loved the 2 wire connection... Time will tell the rest of the story.
For $50 and a sealed unit... then that's the way to go
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Unread 09-23-2010, 05:09 PM   #120
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Default Re: Digital Voltmeter Display Installed

I used this one http://www.digitalmeter.com/cgi-bin/...nfig=ent-datel

No issues, sealed nicely and made to use on a motorcycle. Display is a nice blue that is extremely legible day and night.
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