1976 Scamp fuel gauge problems

That's what I figured, but I grabbed a couple regulators from the junkyard today anyway. With my meter on them, they were jumping between 7 and 0, so although difficult, it is possible to tell that they work with a digital meter. But now, before I go and play much more with this, should I get full battery power back at the gas tank or should it be the lowered, regulated voltage? I went to the Shack and bought what I need to change over from the mechanical to a solid state regulator, so I'm definitely going to do that. Now, as far as the sender, would this be a good one? http://www.autozone.com/autozone/pa...N-io1zdZ8vdfx?itemIdentifier=709606_775335_0_ I haven't purchased it yet, but I'm thinking about this one because it's the cheapest of the three I can get at AutoZone. Plus, I get a discount since I work there.