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03-09-2022, 08:21 PM
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#1
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Member
Join Date: Jun 2020
Posts: 40
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Seeking advice, alternate trailer wiring plug
We have the typical side-of-the-truck-bed fifth wheel plug on our F-350. (I didn't install it, but I definitely use it!)
I need to have an *additional* outlet down at the bumper. (Have to pull a "regular" trailer next week.) That trailer is also a 7-blade, so I bought a split 7-blade/4-flat outlet (because you always need the 4-flat). Can I just "tap" into the wiring on the other plug for it? (Heat shrink, all that, yeah.)
Not sure what other way I'd do it, but I'm betting someone out there has done this before. Any advice welcome.
Note: This is not for trailer-behind-another-trailer. This is to have an alternate socket at the bumper.
__________________
2018 Grand Design 399TH (44') • 2019 Ford F-350 DRW
With 2016 Harley Heritage • 2013 Sportster with a sidecar!
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03-10-2022, 11:07 AM
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#2
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Junior Member
Join Date: Oct 2021
Location: Near Anderson, Indiana
Posts: 25
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I always like to take the path of least resistance. Rather than going through the pain staking exercise of wiring, splicing, and maybe making a mistake along the way, also interfering with your truck wiring, why not just get something like this? If it were mine, this is what I'd do:
Click here
or
Click here, slightly higher cost though.
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2019 Montana High Country 375FL Fifth Wheel
2014 Chevy Silverado, 3500 Dually, long bed, crew cab
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03-10-2022, 11:15 AM
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#3
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Member
Join Date: Jun 2020
Posts: 40
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OP here: Yeah, you're right. I have those parts, but running through the tailgate (we have a hard cover), wouldn't work as well. Turns out, the part i need is BU5Z-14489-AA. There's a hole in the bumper where it goes and a harness attachment right there, tucked away that I didn't see previously. Local Ford doesn't have it, but say they can have it tomorrow. I just have to drive 30 minutes one way to pay for it first. Ugh. But thanks for the help!
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2018 Grand Design 399TH (44') • 2019 Ford F-350 DRW
With 2016 Harley Heritage • 2013 Sportster with a sidecar!
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03-10-2022, 08:02 PM
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#4
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Junior Member
Join Date: Oct 2021
Location: Near Anderson, Indiana
Posts: 25
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Is the wiring harness a simply, plug it in and it works? So there's no cutting wires, splicing, and all that? If so, that's the better way to. It's attached permanently then.
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2019 Montana High Country 375FL Fifth Wheel
2014 Chevy Silverado, 3500 Dually, long bed, crew cab
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03-10-2022, 08:12 PM
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#5
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Member
Join Date: Jun 2020
Posts: 40
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Exactly. Fitting the proper harness is the right way. I'm loathe to cut and splice when I don't have to! Not afraid to, but... so messy!
__________________
2018 Grand Design 399TH (44') • 2019 Ford F-350 DRW
With 2016 Harley Heritage • 2013 Sportster with a sidecar!
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03-11-2022, 08:19 AM
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#6
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Senior Member
Join Date: Oct 2017
Location: Germantown, Tennessee
Posts: 716
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I also would order the correct part from Ford. No splices, not on anything late-model.
__________________
Jim and DW 50 years Brenda
2018 40rssa and 2021 Jayco Eagle 40'
2019 F450, ruby red
Harley Road King & sidecar
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03-11-2022, 11:22 AM
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#7
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Senior Member
Join Date: Feb 2013
Location: on the road
Posts: 1,202
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Etrailer probably has the same.
__________________
2015 RAM LongHorn Dually Air ride Aisin 4:10's
2016 MS 39TKSB3 "Highly Elited"
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03-14-2022, 04:42 PM
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#8
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Junior Member
Join Date: Apr 2021
Posts: 3
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7-blade option
My 2500 came with a bumper mount 7-blade.
When I had the gooseneck installed, they added a 7-blade to the inside of the bed. It simply provided a "T"/"Y" to allow the new end to go into the bed.
Look for the connector under the bed or tail lights
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