2018 Active Exhaust Install Guide

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by breeves002, Apr 18, 2018.

  1. swooshdave

    swooshdave Well-Known Member

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    I’d like to see more data from @AnalogDan at the very least.

    Even if I don’t end up having the back plug I think there’s enough info now on where to plug into the harness. I’m not afraid of a little wiring.
     
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  2. HoosierDaddy

    HoosierDaddy Well-Known Member

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    I wonder if Ford might substitute harnesses with unneeded elements if there is a delay of a more basic harness rather than delay building cars. Probably not though, since I believe they wouldn't have an excess of another harness plus, probably not a big deal to Ford if they delay some cars and build others instead.
     
  3. swooshdave

    swooshdave Well-Known Member

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    Considering it takes 4+ months to build a car I wouldn't call their production planning stellar. Of course that's totally a Monday morning QB comment. I suspect between ticking engines and supply chain fun it's been interesting at the blue oval.
     
  4. Kona 18

    Kona 18 Well-Known Member

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    2018 301a
    No safe and smart
    No magnaride
    No shaker
    No b&o audio
    Yes a10
    No digital dash

    No plug
     
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  5. Rock50

    Rock50 Member

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    Started routing the wires. Followed the great instructions posted by Fishtail on where to tap the control lines. For routing, used the install guide for Roush active exhaust: https://www.roushperformance.com/media/parts/manuals/422100-instructions.pdf. Getting power from the same fuse and ground at the same location in the trunk as recommended in the guide from Roush. Went with the 22ga wire for control lines, but probably 20ga would be better, as this is the largest coming from the PCM. For power, probably 18ga is better, as originally, a 15A fuse is used for the two actuators (my add-a-fuse comes with another 10A micro fuse, so just keeping it). Routing everything on the driver's side only, as I pulled the power wire under the dash. Easier than having to pull another wire all the way from the fuse box (passenger's side) to the trunk.
     
  6. Rock50

    Rock50 Member

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    I think all the 2018s have the fuse and the active exhaust relay in the fuse box located under the hood, even if there was no active exhaust, as mine does. Can someone tell where the connector C215 or C3806 are at? Could it be that they are near the passenger kick panel fuse box? Would be best to grab power from the VT-BN wire on pin 2 on C215 or pin 7 on C3806 (likely blank).
     
  7. Rock50

    Rock50 Member

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    Believe I found C215. It is on the bottom of the fuse box, passenger side kick panel. The connector is gray and is at the bottom, wire is at the top of the connector, left side. VT-BN wire shows 12V with accessory on and switches off when I pull under hood relay 59 (active exhaust).
    C216.jpg
     
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  8. swooshdave

    swooshdave Well-Known Member

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    CVok2eA.png
     
  9. ehazel

    ehazel Member

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    #294 ehazel, Dec 28, 2018
    Last edited: Dec 28, 2018
    Awesome finding Rock! This was it, I tested exactly the same as you did. I attached two photos that will hopefully help others locate and verify for their own upgrade. Wire is Violet with a thin brown stripe, second down from the top on the left/"drivers" side of the connector.

    20181228_183033 - Copy.jpg 20181228_183314 - Copy.jpg
     
  10. swooshdave

    swooshdave Well-Known Member

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    So you’re just going to add the wire to the female plug? I thought you needed four wires total?
     
  11. ehazel

    ehazel Member

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    #296 ehazel, Dec 28, 2018
    Last edited: Dec 28, 2018
    The above is for utilizing the factory relayed and fused active exhaust power circuit instead of tapping into some random switched power, the four signal wires from the drivers foot-well will also have to be brought back.
     
  12. swooshdave

    swooshdave Well-Known Member

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    Seems strange they would pull the wires from across the car just to have power. I sure hope I have the plug in the back just to try to trace the wires back.
     
  13. swooshdave

    swooshdave Well-Known Member

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    Spent three hours at the dealer today and I’m too tired to look under the car for the plug. :yawn:
     
  14. SMUAlien

    SMUAlien Member

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    I am the same as Kona:

    2018 301a
    No safe and smart
    No magnaride
    No shaker
    No b&o audio
    Yes a10
    No digital dash

    No plug
     
  15. swooshdave

    swooshdave Well-Known Member

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    UeFChhE.jpg

    Am I looking in the right place?
     
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