What are wires going to fuel pump responsible for?

Discussion in 'Mazdaspeed 3 General Discussion' started by 07Speed3, Jan 4, 2023.

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  1. 07Speed3

    07Speed3 Greenie N00B Member

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    What are the 4 wires going to the in tank fuel pump responsible for? There’s a brown, black, white and green
     

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  2. Pyrokid73

    Pyrokid73 Greenie N00B Member

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    Not sure if you've figured this out, but they are pump power and fuel level sender. If I'm not mistaken the brown & white wires (smaller gauge) are fuel sender and the green & black (larger gauge wires) are the fuel pump power.
     
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