Fuel gauge

johnnycuda said

And why did my original test not work? That’s the way I’ve been testing it for years

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Your first test, grounding the sender wire at the tank should have worked

IF ...

1. The wiring from the sender to the cluster is good.
2. The connector on the cluster cir board are good and making contact with the connectors on the wires
3. The gauge is good

That the temp gauge works is a good sign