Wiring Gurus.... LED GAUGE.. HELP

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Mar 27, 2007
  #1  
Hey guys here's my question:

I purchased one of these: http://cgi.ebay.com/Brand-New-3-Blue...QQcmdZViewItem





The unit runs off of 5V so I purchased a 7805 5V regulator to supply power to the unit. I tried running the input for testing off of my distribution block and the unit read nothing. It powers up, but reads zero only.

Now I know the car is supposed to convert AC to DV and this unit is intended to read AC up to 20V. There is a DC gauge but it reads amps and I want voltage. Am I doing something wrong or is this gauge broken?
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Mar 27, 2007
  #2  
Re: Wiring Gurus.... LED GAUGE.. HELP
Here is a drawing from the seller. The DC input is easy from anywhere in the car, but where the crap do I get the AC current to monitor voltage?

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Apr 3, 2007
  #3  
Re: Wiring Gurus.... LED GAUGE.. HELP
lol. buy an inverter?
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Apr 3, 2007
  #4  
Re: Wiring Gurus.... LED GAUGE.. HELP
I really don't think that was intended for automotive use. (no 20V AC available)
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Apr 4, 2007
  #5  
Re: Wiring Gurus.... LED GAUGE.. HELP
It was my mistake for not buying DC. Lesson learned.
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