 Different voltmeter readings? |
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| SKL1 |
 Jul 14 2025, 08:44 PM
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#1
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Senior Member  Group: Members Posts: 1,714 Joined: 19-February 11 From: north Scottsdale Member No.: 12,732 Region Association: Upper MidWest 
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I've noticed with my '71, which has about 120K miles on it, the voltmeter is pretty much always reading around 11 V regardless of speed or revs.
In my '73, which has about 77K miles on it, it reads 11 or so at start up and for the first couple miles and then goes up to between 12 and 13. I swapped the voltage regulators for the heck of it and it didn't change anything. Is the older alternator from the '71 just worn out?? Not looking forward to changing it with the engine in the car!! |
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| barefoot |
Jul 16 2025, 02:45 PM
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#2
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Senior Member Group: Members Posts: 1,412 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States
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I substituted the cigar lighter for a USB double port with built in voltmeter, so it gets its power from that circuit. Typically reads 13.4 V
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Posts in this topic
SKL1 Different voltmeter readings? Jul 14 2025, 08:44 PM
Spoke The dash voltmeter on my '71 reads between 12-... Jul 14 2025, 10:46 PM emerygt350 That dash volt meter is great for reminding you th... Jul 15 2025, 03:49 AM
porschetub
That dash volt meter is great for reminding you t... Jul 15 2025, 05:18 PM SKL1 Good to know. Thx guys. Jul 15 2025, 07:25 PM 930cabman
I substituted the cigar lighter for a USB double ... Jul 17 2025, 05:53 AM |
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