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  1. #1
    Seasoned Camper EddieK82's Avatar
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    Wiring Harness Error in Dash, Brakes Locking Up

    Hello,

    We recently got back from our first major trip. We got to Tampa, unhooked and when we were leaving, we noticed the F350 telling us the Trailer Wiring Harness had a fault in it. I hit ok, took it slow and didn't seam to think much of it after that. By the time we got to Virginia, almost to our destination, we pulled into a Walmart parking lot and I noticed the brakes were screaming and one of the tires had way more brake dust on it than the rest. I was unable to find anywere to fix it so we wobbled home and it's parked now.

    I called Grand Design and have an appointment where I bought it to get it fixed. They wouldn't say if it's warranty or not, but I hope to god it is as this is the first long trip we took and I have no idea what could have caused this kind of failure.

    Any ideas of how this could have happened?
    Ed & Kaitlin
    2021 Grand Design Reflection 320MKS
    2018 F350 SD Platinum FX4 Crew Cab Short Bed SRW, 55 Gallon Titan Tank, Air Lift 5000.

  2. #2
    Paid my dues 😁 FT4NOW's Avatar
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    That fault message on a Ford indicates a short on the brake circuit. Any chance you accidentally pulled the break away switch on the pin box?

    Sent from my SM-G950U using Tapatalk
    2023 Momentum 398M-R
    2023 Ford F-450

    SOLD - 2021 Reflection 311BHS
    SOLD - 2017 Momentum 399TH

  3. #3
    Seasoned Camper EddieK82's Avatar
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    I checked everything and it looks fine, how do I check if it was pulled?
    Ed & Kaitlin
    2021 Grand Design Reflection 320MKS
    2018 F350 SD Platinum FX4 Crew Cab Short Bed SRW, 55 Gallon Titan Tank, Air Lift 5000.

  4. #4
    Paid my dues 😁 FT4NOW's Avatar
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    It would be protruding out more than normal. It's also possible the switch failed, they dont last forever, I've had to replace mine, it was shorted out, but luckily I wasnt on the road.

    Sent from my SM-G950U using Tapatalk
    2023 Momentum 398M-R
    2023 Ford F-450

    SOLD - 2021 Reflection 311BHS
    SOLD - 2017 Momentum 399TH

  5. #5
    Seasoned Camper EddieK82's Avatar
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    I went and checked it out now, it's not pulled out at all.
    Ed & Kaitlin
    2021 Grand Design Reflection 320MKS
    2018 F350 SD Platinum FX4 Crew Cab Short Bed SRW, 55 Gallon Titan Tank, Air Lift 5000.

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