'39 gas tank factory ohm readings?

7XPacemaker
7XPacemaker Senior Contributor
in HUDSON

 Does anyone know what the factory sending unit should have been? Someone has fabricated the tank on my car and it is a side mounted sending unit (perhaps an old Jeep sending unit).the sending unit is shot and the plastic float is full of gas. I want to order one that will work with the original gauge. The one that is in it looks similar to one from a '46 Willys Jeep.

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  • Geoff
    Geoff Senior Contributor
    The original unit is a bi-metal one, not resistor.  The later ones used a 90 ohm resistor, but need to be stabilised at 5 volts to work properly.

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