[pjmoreland]

Yes on the voltage test.

For the continuity test, I thought about some more, and it would be better to measure resistance between the tan wire post on the gauge and the ground post. This should be done with the ignition off. You should get somewhere in the ballpark of 45 Ohms (maybe less), depending on the position of your sender. I would also take this same measurement with the brown wire disconnected from the sender. The resistance should be close to 100 ohms.