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bobwellsnoveltyshop · 08-24-2016, 09:50 PM

The 1940 ford standard, deluxe and the pickup truck and including the big 3/4 and up had a BATTERY gauge (volt meter, around 60 ohms in resistance, the face on the deluxe was different than the standard and truck. In 1941 ford pickups and big trucks started using the AMP gauge (measures amperage instead of volts. I have restored over 100 of these 1940 ford instrument clusters and still restore them.
I hope this helps on the battery gauge issue. And the brass jumper is suppose to be on both sides, (voltage side) and the other battery terminal goes to ground as the schematic (wiring diagram) shows.
BILL WELLS

08-24-2016, 09:50 PM	#35
bobwellsnoveltyshop Senior Member Join Date: May 2010 Posts: 779	Re: 1940 ammeter wiring question. The 1940 ford standard, deluxe and the pickup truck and including the big 3/4 and up had a BATTERY gauge (volt meter, around 60 ohms in resistance, the face on the deluxe was different than the standard and truck. In 1941 ford pickups and big trucks started using the AMP gauge (measures amperage instead of volts. I have restored over 100 of these 1940 ford instrument clusters and still restore them. I hope this helps on the battery gauge issue. And the brass jumper is suppose to be on both sides, (voltage side) and the other battery terminal goes to ground as the schematic (wiring diagram) shows. BILL WELLS