No but I was grounding it other ways to test it to no avail. I have now gotten the unit out of the tank and it is a bit crusty. It's not original but it is without a float, screen and was stuck in one position. With a good ground I can get it to move the gauge now that it is no longer stuck and it looks accurate. Looks like a replacement unit and new ground strap is in order. It is good to have helpful friends. Thanks to all.