Voltmeter acting weird - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 5 Old 06-13-2012, 08:40 PM Thread Starter
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Voltmeter acting weird

I hooked up a autometer voltmeter the other day and it worked fine for a day, today i drove the car and it was working fine, turned it off and it had stopped working. so long story short i removed it tested it on a batt. it worked ok, then cleaned the ground plugged it back up and it began to read 12volts. I then re installed it got everything hooked back up and it does nothing again!!

I have it hooked up to the radio acc wire, its still hooked up radio works and everything, i do have the gague and the gauge light grounded to the same spot. the light still works fine but the gauge is dead again. Any suggestions? Its got to be a wire i would think but there all still tight and hooked up.

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post #2 of 5 Old 06-13-2012, 09:54 PM
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What are you getting with a DVM at that wire with radio on and off?


1970 Mach 1 Mustang with SoT bilsteins and mid-eye 4 1/2 leafs 620lb drop springs in the front. *393 4V cleveland with Buddy Rawls custom solid cam Astro A5*
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post #3 of 5 Old 06-13-2012, 10:28 PM Thread Starter
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It got dark on me b4 i could test it but could the ground wire being to thin make it act up?
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post #4 of 5 Old 06-14-2012, 02:07 PM
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Try grounding it to a different spot and if that doesn't work try getting your +12v from somewhere else. I try and stay away from the radio wires as thats probably the one place that every owner of my car has had their fingers.

1970 Mach 1 Mustang with SoT bilsteins and mid-eye 4 1/2 leafs 620lb drop springs in the front. *393 4V cleveland with Buddy Rawls custom solid cam Astro A5*
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post #5 of 5 Old 06-15-2012, 08:36 PM Thread Starter
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Turns out it was defective i hooked it to a hot battery and still nothing so i just sent it back
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