Another Fuel gauge question

[jjtackleberry]

I've read the other threads, but they are a bit like German stereo instructions.

When i put a tester on the sending unit post, its grounded. In other words, my meter tones when i have one lead on the sending unit post and the other on a ground.

when i take the wire off the post the gauge goes to 3 oclock. when the wire is on the post gauge reads empty. So the reading is the same on the wire, and the post.

Any help would be great.