In reply to Shavarsh :
Don't use a GM sender?
They come with pigtails because the original ones usually had a different design, the flat four connector is an upgrade from the square four. The square ones are the ones that burned up all the time.
No worries there, I'm using a tube style sender to play nice with the cell foam. Does anyone have a favorite brand of gm quick connect to -6 an adapter? Or a preferred cheaper alternative?
Terminology dump: The whole plastic shebang that you bought is also called a "sending unit"
After a bit of machining we have a dummy plug to keep the return line unobstructed, but still directed into the basket as intended: