HomeForumsTechnical – GeneralCar Audio & ElectricsExternal fuel pump wiring

This topic contains 7 replies, has 2 voices, and was last updated by Profile photo of ChrisM ChrisM 2 years, 4 months ago.

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  • #26720
    Profile photo of ChrisM
    ChrisM
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    Member since: August 16, 2017
    Posts: 140
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    Hi All,

    I am about to wire up an external fuel pump and need some help with selecting the right wiring size and replay.

    The pump i have is a proflow PFEFS11380 – The current drawn will be between 9A (40PSI) and 17A (120PSI).

    #26721
    Profile photo of IJ.
    IJ.
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    Member since: April 2, 2015
    Posts: 3 364
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    I’d go minimum 30a on the Relay get one with an inbuilt fuse holder, 25a Wiring as well so it’s never an issue!

    Make sure your Ground connections are the same gauge wiring and spotless.

    #26722
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    ChrisM
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    Member since: August 16, 2017
    Posts: 140
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    Thank mate, i was thinking of a 30amp relay. I didn’t know they had inbuilt fuse holders. I was thinking that i would need about 6mm wiring.

    #26723
    Profile photo of IJ.
    IJ.
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    Member since: April 2, 2015
    Posts: 3 364
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    Narva do them, 6mm as in the OD insulation and all or 6mm thick wire?

    25 amp is around the 5mm OD..

     

    #26724
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    ChrisM
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    Member since: August 16, 2017
    Posts: 140
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    I went to autobarn and got the 25amp rated wire and the Narva 30amp relay with inbuilt fuse

    #26725
    Profile photo of IJ.
    IJ.
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    Member since: April 2, 2015
    Posts: 3 364
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    Sorted  ;-)

    #26726
    Profile photo of ChrisM
    ChrisM
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    Member since: August 16, 2017
    Posts: 140
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    its just mounting the surge under the car that’s a pain in the a**

    #26727
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    ChrisM
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    Member since: August 16, 2017
    Posts: 140
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    the rear brake line holder is in the way

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