One incredibly delicate part of this setup is the wires that go from the
sender through the distributor wall and into the connector. They're so tiny
that if they moved around a bit, the turning sender unit would take them out
in a second. And in the middle of no place, there's no way you'd fix them.
After so many years, that connector is usually cracked and half gone, too--a
potential failure point that a lot of us overlook.