Need to ground my fuel sending unit.

Greyhounds_AMX wrote: If it's like my AMX tank and sender, the sending unit is held to the tank with a round metal ring that you whack with a hammer and drift to tighten/loosen. So there should be good electrical contact between the sender and the ring, and the ring and the tank. My point being, that you should be able to get away with just grounding the tank. In the corners of my tank where the two halves are joined, it's apparent that there's metal extending beyond the crimping that holds the two halves together. You could drill through that material and attached a wire there with a screw without fear of causing a leak.

Absolutely - should work. Not as perfect as the original wire bonded to the sending unit but unless there's a lot of corrosion........ that ring has pretty good pressure against the sending unit AND tank. The corners are large, you can go in a quarter inch or a bit less from a large corner and drill and use a small screw. Heck, they ground the other end to the chassis with a screw!