I put a tee at the oil pressure gauge outlet of the engine and put a pressure switch in one of the holes. The switch is normally open but with oil pressure the switch closes providing power to the fuel pump.

I told the NAPA guy what I wanted and he got out the book and we found a suitable switch. I think mine is 7 psi.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.