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FFCobra Fanatic
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Will the 83-85 mustang carb'ed fuel tank sending unit work with the FFR mkIII autometer classic gauges? anyone know?
thanks, just wanted to check before I trash my old 83-85 single hole fuel tank...
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Nope. Ford changed the resistance in 1987 and the FFR guages work with the newer senders.

Ford fuel sender 1987 up
158 ohms full/ 16 ohms empty

Ford fuel sender, 1986 down
12 ohms full/ 73 empty
 
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