Here is how to wire the LS PCM to the Mazda fuel pump wiring.
The changes are easily made in the fuse box, this is pulled up by pressing the clips on the side.
Cut the Blue/Red and the Red/Green wires from both pump relays then connect the Red/Green harness side wire to the Blue/Red relay side wire.
Cut the Light Green wire from the Mazda ECU connector and join it to the LS PCM Fuel pump wire.
The fuel pump should now be controlled by the LS PCM. (Note: The Main Relay will have to be activated for this to work)
Tried following these instructions for wiring the fuel pump in Wouldn’t work until I grounded the black and blue wire from the fuel relay. Just a heads up if someone has the same issue!
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So would this replace the need to use the standalone relay?
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The only way i got this to work was to pull egi relay from mazda box. Will this effect anything else
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