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Brian · 10-12-2024, 09:59 PM

The [King Sealy] fuel gauges as fitted to 1936 Fords, do not operate via resistance. You have a short somewhere. Feeding a full six volts into the gauge will make it read full. try running a temporary wire from gauge to tank unit. If the gauge then reads correctly, the issue is in the original wire. If it still reads full, the sender unit is at fault. Happy diagnosing!
edit; I assume you're using original gauge and sender unit, the modern replacement tank units are not really compatible

10-12-2024, 09:59 PM	#2
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 4,096	Re: Fuel Gauge Issue The [King Sealy] fuel gauges as fitted to 1936 Fords, do not operate via resistance. You have a short somewhere. Feeding a full six volts into the gauge will make it read full. try running a temporary wire from gauge to tank unit. If the gauge then reads correctly, the issue is in the original wire. If it still reads full, the sender unit is at fault. Happy diagnosing! edit; I assume you're using original gauge and sender unit, the modern replacement tank units are not really compatible __________________ Unfortunately, two half wits don't make a whole wit!