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Gary
Gary, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 1008
Experience:  Senior Technician
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Im in Australia, HSV Maloo :) 2011 HSV Maloo, installing an

Customer Question

im in Australia, HSV Maloo :)
JA: What is the model/year of your Pontiac?
Customer: 2011 HSV Maloo
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: installing an after market fuel pump
JA: Have you ever replaced the fuel pump, or is this the original?
Customer: currently its original, ive installed a supercharger and now want to install a dual pump intak setup
JA: Anything else you think the mechanic should know?
Customer: I want to know how to use the wires
Submitted: 11 months ago.
Category: Pontiac
Expert:  Gary replied 11 months ago.

Hi there,

Have you got the fuel tank out?

Can you see the connector with four wires on the MRA (top of the fuel pump assembly)?

Gary

Customer: replied 11 months ago.
Yep, 2 thick, grey and black, 2 thin purple and brown
Expert:  Gary replied 11 months ago.

Ok, Grey is pump positive, Black is pump negative (ground), Purple is sender positive, Brown or maybe brown/yellow is sender negative (ground).

You only need the Grey and Black for your pump upgrade.

Gary

Expert:  Gary replied 11 months ago.

If you feel the factory wiring might not be up to the task, you can use the grey wire to operate another relay.

Then run a new positive feed (and ground lead if you like) from your battery through the rear firewall.

I hope this helps you.

Gary

Expert:  Gary replied 10 months ago.

Hi again,

I hope my advice has been of assistance to you.

Kind regards

Gary

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