scottcleaver
Newbie
I have built a new engine for my 454SS. I have also used a Holley Sniper EFI. I have wired in the new fuel pump that came with the kit so that I can have the required 60psi the Sniper needs. I have left the factory fuel pump in the tank. Now that I have started the truck and everything seems fine I need to do something with the in tank factory pump. I would like to use it as a pusher pump up to the new Holley pump. I looked at the wire plug to the tank and found the gray, purple and a black with white stripe wire. I have grounded the black wire to the frame and when I connect a hot wire to the gray It doesn't turn on the pump. Any ideas?