Sending unit ground strap on stainless

I never put a lot of thought into why the lock ring to sender and tank, then tank contact to hanger straps wasn't sufficient chassis ground path for the fuel sender. The factory engineers discovered it wasn't, but my main reason for never pondering,,, a daisy chain of metal to metal contacts isn't a sufficient ground path anywhere. In a more perfect world the ground path back to batt' negative post would be a negative wire harness very similar to the positive wire harness.
For fuel sender without a proper fitting factory ground jumper, a length of wire secured under gear screw clamps serves the same.