External fuel pump runs with key in accessory position.

[89_C3500_Larry]

I have a carburated 454 in a 1989 c3500 that originally had a 350tbi. The external fuel pump runs with the key in accessory position. Where should I hook the power so that it only runs with the key in the run position? Any wiring advice?

 

[Schurkey]

Check the fusebox for a fuse that's hot in "Crank" and "Run", but not in "Off", "Off-Locked" or "Accessory".