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supereal · 08-24-2015, 10:17 PM

All gauges, except the ammeter, are powered by a common circuit. As you report problems with more than one gauge, check the feed to the gauges for proper voltage, and the various senders for good grounds, as the senders work by providing the grounds. This includes having a clean, tight ground strap between the battery and the engine, as well as the body of the vehicle.

08-24-2015, 10:17 PM	#2
supereal Senior Member Join Date: Jul 2014 Location: Iowa Posts: 1,634	Re: Starting my flathead All gauges, except the ammeter, are powered by a common circuit. As you report problems with more than one gauge, check the feed to the gauges for proper voltage, and the various senders for good grounds, as the senders work by providing the grounds. This includes having a clean, tight ground strap between the battery and the engine, as well as the body of the vehicle.