Acceptable voltage discrepancy, Voltage at dash vs. voltage at battery |
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Acceptable voltage discrepancy, Voltage at dash vs. voltage at battery |
98101 |
Nov 24 2017, 06:26 PM
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#1
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Michael in Seattle Group: Members Posts: 373 Joined: 7-October 17 From: Seattle, WA Member No.: 21,495 Region Association: Pacific Northwest |
I started my car after sitting a few days and noticed the dash voltage meter went up over 15V. In Tech Tips 700 I read that overvoltage could lead to battery acid spills, so I quickly shut it off.
Prior to that, I'd noticed the dash gauge reads lower than I'd like when all the lights are on. I checked the voltage at the battery under different circumstances and they weren't so extreme in either direction. So now I'm wondering what the acceptable differences would be before you'd start to expect a poor (ground?) connection somewhere? https://www.youtube.com/watch?v=S6BcQC-cjXo |
cary |
Nov 24 2017, 11:14 PM
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#2
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Advanced Member Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest |
Seeing the same issue for years. I circumvented the harness and ran a fused wire directly from the battery to the gauge. Instead of 10 volts with the headlights on. It now reads 12.5 volts.
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