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Old 03-10-2019, 05:23 PM   #1
Afirehawk1
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66 c10 Voltmeter Conversion Final Wiring

Swapped the ammeter with a voltmeter.
One wire should be a 12 volt ignition wire under the dash??
What about the 2nd wire?
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Old 03-10-2019, 05:25 PM   #2
The Rocknrod
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Re: 66 c10 Voltmeter Conversion Final Wiring

We pretty much dont do anything here without pics.
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Old 03-10-2019, 05:31 PM   #3
Afirehawk1
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Re: 66 c10 Voltmeter Conversion Final Wiring

Can not get a good photo
Im using the American Autowire Classic set which does not support the ammeter so i converted the ammeter to a voltmeter.

Thinking to the alternator or maybe battery but not sure
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Old 03-11-2019, 01:34 AM   #4
Mack B
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Re: 66 c10 Voltmeter Conversion Final Wiring

Quote:
Originally Posted by Afirehawk1 View Post
Can not get a good photo
Im using the American Autowire Classic set which does not support the ammeter so i converted the ammeter to a voltmeter.

Thinking to the alternator or maybe battery but not sure
If I'm reading you right and you are just installing a voltmeter in place of an ammeter:
I'm 99% positive all you need for a voltmeter is a keyed hot and a ground.
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Old 03-11-2019, 06:56 AM   #5
Afirehawk1
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Re: 66 c10 Voltmeter Conversion Final Wiring

So a 12 volt ignition wire would work?
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Old 03-12-2019, 10:28 PM   #6
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Re: 66 c10 Voltmeter Conversion Final Wiring

Quote:
Originally Posted by Afirehawk1 View Post
So a 12 volt ignition wire would work?
Yes. 12v ignition and the other wire to ground in most cases.
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Old 03-13-2019, 02:38 PM   #7
damnyankee36
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Re: 66 c10 Voltmeter Conversion Final Wiring

Tapping into one of the pink wires at the back of the cluster would be the easiest.
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Old 03-13-2019, 03:46 PM   #8
straight6chevyguy
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Re: 66 c10 Voltmeter Conversion Final Wiring

Running the positive wire to the accessories terminal on the ignition switch should work
and connecting the negative to any ground (the dash or any grounded part in side the cab) .
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Old 03-13-2019, 03:49 PM   #9
straight6chevyguy
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Re: 66 c10 Voltmeter Conversion Final Wiring

All so an accessories terminal on the fuse block would work for the 12 volts.
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Old 03-13-2019, 07:43 PM   #10
spudder
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Re: 66 c10 Voltmeter Conversion Final Wiring

Like stated above, it's as easy as tapping into a pink wire on the back of the instrument cluster. From the other terminal on the voltmeter, run a wire to a clean ground anywhere close.
The pink wire is 12 volt hot with key on.
I would test the voltmeter on a battery source before installing it to determine which terminal is +.
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