Fox ls swap dominator efi fuel pump?
02-21-2014, 11:45 PM
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Fox ls swap dominator efi fuel pump? I'm looking for a detailed diagram to wire my holley dominator efi into the stock fuel pump wiring. I've deleted the stock ford ecm and was wondering if I could just connect the holley fuel pump trigger wire into the existing body harness? I've been searching but can't find what I'm looking for.
Car is a 91 mustang gt
From what I see most just run the trigger to the relay under the drivers seat. My thoughts are I could save removing the drivers seat if I can just tie into the old ecm trigger wire by the passenger footwell.
Car is a 91 mustang gt
From what I see most just run the trigger to the relay under the drivers seat. My thoughts are I could save removing the drivers seat if I can just tie into the old ecm trigger wire by the passenger footwell.
02-26-2014, 06:02 PM
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With an aftermarket pump like that I would not use the factory wiring.
Buy a relay kit like the one I have linked to.
The relay is wired directly to the battery and then is triggered by the wire from your Holley ecu.
http://www.summitracing.com/parts/sum-890023/overview/
Buy a relay kit like the one I have linked to.
The relay is wired directly to the battery and then is triggered by the wire from your Holley ecu.
http://www.summitracing.com/parts/sum-890023/overview/
02-26-2014, 07:37 PM
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factory wire off the relay under the seat is the green one. i would not use it either, every swap ive seen done like that the wiring fails eventually. if you look at the harness going through the floorboard above the tank, which goes behind the rear bumper where the connector is, it is the large pinkish wire that needs to feed power. run a relay and feed it to the pin at that connector