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05-19-2022, 09:27 PM
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#1 |
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Registered User
Join Date: Jun 2021
Location: Gravette Arkansas
Posts: 7
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Volt meter question
I have a 74 Chevy C20 pickup. The Volt meter doesn't work while installed in the truck. However it works perfect out of the vehicle when measuring battery voltage. There are only 2 plug-in points for it in the instrument cluster but the gage has 3 terminals. What is the purpose of the third terminal? I am confused.
- Denver |
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05-19-2022, 10:57 PM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,578
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Re: Volt meter question
Like this?
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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05-20-2022, 05:26 AM
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#3 |
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Registered User
Join Date: May 2007
Location: CO
Posts: 473
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Re: Volt meter question
Has the wiring been changed to accommodate the volt gauge? 73-75 trucks came with an ammeter gauge which is wired differently.
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05-20-2022, 11:28 AM
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#4 |
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Registered User
Join Date: Jun 2014
Location: CO
Posts: 729
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Re: Volt meter question
I will second what prong said earlier trucks had ammeter gauges not volt meter gauges.
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79 Chevy 2wd BIG10 350 TH400 |
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05-21-2022, 11:20 PM
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#5 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,930
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Re: Volt meter question
this thread might help, especially post #9 and also Hatzie's wiring diagram links in his signature. http://67-72chevytrucks.com/vboard/s...d.php?t=643942
As noted above, if you truly have a GM voltmeter in your 74, it's a 76+ gauge. |
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