I need some fuel sending unit experts please

bacchustn said

The pic shows red on the connector and black on the fuel sender terminal. Basically a straight through connection from gauge to sender with the multimeter in between reading voltage changes. I’m not sure if you could open the videos but I was trying to recreate the analog video with my digital meter.

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A voltmeter is not normally used in between the power source and the device. The device is not a good ground because it has resistance in it.

edit: it is also a high resistance device. current can not flow through a voltmeter. In other words it can not be used to make connections.