66 c10 Voltmeter Conversion Final Wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Afirehawk1 · 03-10-2019, 05:23 PM

Swapped the ammeter with a voltmeter.
One wire should be a 12 volt ignition wire under the dash??
What about the 2nd wire?

**The Rocknrod** · 03-10-2019, 05:25 PM

We pretty much dont do anything here without pics.

Afirehawk1 · 03-10-2019, 05:31 PM

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

Mack B · 03-11-2019, 01:34 AM

Quote:

Originally Posted by Afirehawk1

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.

Afirehawk1 · 03-11-2019, 06:56 AM

So a 12 volt ignition wire would work?

Cooper197 · 03-12-2019, 10:28 PM

Quote:

Originally Posted by Afirehawk1

So a 12 volt ignition wire would work?

Yes. 12v ignition and the other wire to ground in most cases.

**damnyankee36** · 03-13-2019, 02:38 PM

Tapping into one of the pink wires at the back of the cluster would be the easiest.

**straight6chevyguy** · 03-13-2019, 03:46 PM

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) .

**straight6chevyguy** · 03-13-2019, 03:49 PM

All so an accessories terminal on the fuse block would work for the 12 volts.

**spudder** · 03-13-2019, 07:43 PM

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 +.

LostMy65 · 04-10-2020, 11:40 AM

Have you figured out how to post pictures? It'd be interesting to see how it looks.

03-10-2019, 05:23 PM	#1
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	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?

03-10-2019, 05:25 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 66 c10 Voltmeter Conversion Final Wiring We pretty much dont do anything here without pics. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-10-2019, 05:31 PM	#3
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	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

03-11-2019, 06:56 AM	#5
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: 66 c10 Voltmeter Conversion Final Wiring So a 12 volt ignition wire would work?

03-13-2019, 02:38 PM	#7
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 724	Re: 66 c10 Voltmeter Conversion Final Wiring Tapping into one of the pink wires at the back of the cluster would be the easiest.

03-13-2019, 03:46 PM	#8
straight6chevyguy Senior Member Join Date: Dec 2018 Location: yamhill OR Posts: 913	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) . __________________ 1965 chevy c20 292 4speed http://67-72chevytrucks.com/vboard/s...d.php?t=777601 1976 chevy c10 250 4speed http://www.67-72chevytrucks.com/vboa...d.php?t=787037 1978 chevy c20 350 4speed 1998 chevy c1500 4.3L 5speed 2002 Chevy s10 4.3L auto 4x4 Plus a Mercury & some Fords... To many projects!

03-13-2019, 03:49 PM	#9
straight6chevyguy Senior Member Join Date: Dec 2018 Location: yamhill OR Posts: 913	Re: 66 c10 Voltmeter Conversion Final Wiring All so an accessories terminal on the fuse block would work for the 12 volts. __________________ 1965 chevy c20 292 4speed http://67-72chevytrucks.com/vboard/s...d.php?t=777601 1976 chevy c10 250 4speed http://www.67-72chevytrucks.com/vboa...d.php?t=787037 1978 chevy c20 350 4speed 1998 chevy c1500 4.3L 5speed 2002 Chevy s10 4.3L auto 4x4 Plus a Mercury & some Fords... To many projects!

03-13-2019, 07:43 PM	#10
spudder Active Member Join Date: Aug 2012 Location: Central Illinois Posts: 103	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 +.

04-10-2020, 11:40 AM	#11
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: 66 c10 Voltmeter Conversion Final Wiring Have you figured out how to post pictures? It'd be interesting to see how it looks. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

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