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Lethal Performance Fuel System Tech Tips: Return Style Wiring Harness

Discussion in 'Lethal Performance' started by [email protected], Jul 30, 2019.

  1. Chris@Lethal

    [email protected] Authorized Vendor Authorized Vendor

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    LETHAL PERFORMANCE TECH TIPS | FUEL SYSTEM SERIES

    With any build, whether you’re gunning for 600rwhp or 1500rwhp, you’re gonna need fuel.

    Here at Lethal Performance, we offer fuel system options for just about every level of horsepower, from the budget build to 2000rwhp builds. You can purchase the systems complete with everything needed to install, but it’s important to understand the components of the system for installation & purpose. That’s where our latest Tech Tips series comes in!

    With each episode, Jared will go over the components that come in our fuel systems, from the budget kits which use the factory feed line & fuel rails to the complete systems that come with everything from rails to pumps.

    EPISODE 1: THE LETHAL PERFORMANCE RETURN STYLE HARNESS




    When converting your factory returnless setup to return style, wiring is key. Fortunately, we’ve made it easy! Our dual & triple return style harnesses are included in every Lethal Performance / divisionX fuel system but did you know they can also be used in just about any other return style setup? You can simply cut the fuel hat connector off of the end of the harness and splice the harness to your own fuel hat wiring.

    Our return style harness has multiple components:
    • Fusible link
    • Relays
    • Ground wires
    • Trigger wire
    • Fuse holders
    • OEM style connector
    Let's start with the included fusible link.



    fusiblelink.jpg



    These are included with every harness. The link will connect to the positive terminal on your battery box. The 10g wires will then connect to the long 10g power wires of the harness that lead to the relays.



    relays.jpg



    Each harness will include 2 or 3 relays, depending on which harness you order. These will control the pumps. The relays are powered via the fusible link and have attached black wires which are the grounds. You will need to ground these to an appropriate spot on the vehicle.



    triggerwire.jpg



    Also attached to the relays is a blue wire. This is the trigger wire that will tell the pumps to work. It can be wired in 2 different ways, either as a ‘key on’ setup or to prime like the factory pump(s).



    After the relays you will find 2 (or 3) fuse holders wired in, each containing a 20amp fuse.



    fuses.jpg



    These fuses protect the relays if there is a short between the pumps and the relays. The fuses can also be upgraded to a larger amperage should you need it for larger pumps.



    The last section of the harness is a loomed section coming from the fuse holders which leads down to the OEM style 6-pin connector. This connector will plug directly into the divisionX Gen 3 SN95 fuel hat OR you can cut the connector off and wire the harness directly to your own fuel hat setup.



    IF YOU HAVE ANY QUESTIONS, PLEASE FEEL FREE TO GIVE US A SHOUT. STAY TUNED FOR FUTURE EPISODES OF OUR FUEL SYSTEM SERIES WHERE WE’LL GO OVER MORE COMPONENTS OF OUR RETURN STYLE FUEL SYSTEMS.
     

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