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Accelo · 05-26-2022, 07:51 PM

The amperage difference makes no difference. Disconnecting one side doesn't deflect the needle at all.
I would start by confirming there is 12 volts (to ground) on both terminals on the back of the gauge.

05-26-2022, 07:51 PM	#5
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,168	Re: Battery/Amp Gauge The amperage difference makes no difference. Disconnecting one side doesn't deflect the needle at all. I would start by confirming there is 12 volts (to ground) on both terminals on the back of the gauge.