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Old 03-16-2018, 05:01 PM   #1
wjjeeper
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Join Date: Sep 2013
Location: Cold Lake, AB
Posts: 402
Help with dual tank wiring

I have searched and cant find an answer

Truck is a 77. All tanks senders, wiring, switch etc is new.
I have gone through the wiring diagram and verified all connections are good. Verified the grounds for the senders are good.

The truck will run off either tank amd I can hear the solenoid switch from each tank. But the gauge will not register any fuel level when on the right hand tank.

Any ideas? How can I verify sending unit is bad?
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Last edited by wjjeeper; 03-16-2018 at 05:34 PM.
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