12V to the fuel stop cutoff.
The following is my educated guess: Priming the lift pump might be a good idea. If I had to do it I'd likely use a 12v pump or a hand pump with a line filter to the inlet side of whatever is present from the fuel system. If you get it running turn off your 12v pump to see if the lift pump is doing its thing.
Lemmings as you know them are a Disney fabricated lie. The truth is out there.