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Suggestions on fuel pump wiring

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Old 08-29-2018, 04:07 PM
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Default Suggestions on fuel pump wiring

ok, bare with me....

i am am setting up my secondary pump soon and need to make sure my wiring circuit will do what I am wanting it to do.

Vehicle is a 2002 C5 Z06, Early tanks.
Setup currently is a -10 feed to the rails from the in tank pump (hot wired 255). I am adding an ECS fuel hat with a -10 port. From that into a 100 micron Aeromotive filter into an A1000, then into a Y block to feed into the current -10 feed.

As you could imagine, priming a -10 is a pain. So I want to have the A1000 to trigger on under 5psi intake pressure and trigger on under 50 psi fuel pressure.

Below is my current circuit. Breakdown of the components in the circuit is as follows.

S1= 12 volt 30 amp fuse
S2= 30 amp circuit breaker
S3= N.O. 5 psi pressure switch
S4= Ignition key switched 12 volts
S5= N.O. 50 psi pressure switch
RY1= 30 amp N.O. Fuel Pump Relay
RY2= 30 amp N.O. Relay
RY3= 30 amp N.C. Relay
M1= A1000




Can someone double check that this will do what I am wanting please?
Old 08-29-2018, 11:40 PM
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How about adding a -10 check valve after the pump. Should hold pressure thin.
Old 08-30-2018, 11:11 AM
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I will move a check valve I currently have to be after the A1000, but that’s a different situation for later. I’m focused on making sure I have my wiring correct for the basic triggering of the A1000.

I have ave been looking for a cost effective PWM for the A1000, something that will work based on MAP, instead of RPM. I would still keep the 50psi fuel relay in place to prime the lines. I think the PWM will help with tuning and fuel temp control, so the system doesn’t get a spike of fuel pressure when the pump comes on.




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