fuel gauge question (1 Viewer)

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Joined
Jul 28, 2021
Threads
4
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Location
Oregon
I have a 67 with original cluster and gauges. I just put in a new tank with new sending unit and now the fuel gauge reads full 100% of the time. I swear I read somewhere that the new sending units don't match up with the old gauges because the voltage output is different. Am I imagining that I read that somewhere? If it's true what is the fix?
 
The old sender works differently so they're not all compatible.

Anyone got a work around for this?
 

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