SD trailer wiring question?
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Laughing Gas
Joined: Sep 2002
Posts: 759
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SD trailer wiring question?
Our great SD's have a 7 round pin plug in to the truck. I am looking at buying a camper this weekend and it has a 7 blade style plug in, which I believe is the standard for RV's. Which is the best way to go about making this work for me?
My truck will be the only one pulling this trailer and I plan on keeping this trailer for a long time. Are there any adapters out there so I can go to blade style to round pole style? So I can get the trailer home?
How hard would it be to put a new end or whole cable/wire on the camper to have a 7 round pin style plug?
Help guide me in the easiest and best way to solve this.
My truck will be the only one pulling this trailer and I plan on keeping this trailer for a long time. Are there any adapters out there so I can go to blade style to round pole style? So I can get the trailer home?
How hard would it be to put a new end or whole cable/wire on the camper to have a 7 round pin style plug?
Help guide me in the easiest and best way to solve this.
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
The standard 7-pin on a Super Duty is the 6 blade pins with the 7th round pin in the center. If your trailer is wired to the standard, it should just plug right in.
If your truck has a different type of plug on it, then someone has replaced the standard plug with something else.
If you look at the following, the 7-way flat pin connector is what came standard on the truck.
etrailer.com | Trailer Wiring Diagrams
If your truck has a different type of plug on it, then someone has replaced the standard plug with something else.
If you look at the following, the 7-way flat pin connector is what came standard on the truck.
etrailer.com | Trailer Wiring Diagrams
Thread Starter
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Laughing Gas
Joined: Sep 2002
Posts: 759
Likes: 0
The standard 7-pin on a Super Duty is the 6 blade pins with the 7th round pin in the center. If your trailer is wired to the standard, it should just plug right in.
If your truck has a different type of plug on it, then someone has replaced the standard plug with something else.
If you look at the following, the 7-way flat pin connector is what came standard on the truck.
etrailer.com | Trailer Wiring Diagrams
If your truck has a different type of plug on it, then someone has replaced the standard plug with something else.
If you look at the following, the 7-way flat pin connector is what came standard on the truck.
etrailer.com | Trailer Wiring Diagrams
Would this be safe enough to get me home?
7 way Round Pin Truck to 7 blade Trailer Plug Adapter : eBay Motors (item 350174318802 end time Apr-29-10 05:56:31 PDT)
Cargo Master
Joined: Apr 2010
Posts: 2,405
Likes: 4
I changed the round pin out for the blade style when I bought it last year. Nice thing about the SD, you should be able to unbolt and unplug from the main harness. You can either buy a new pigtail to wire to the new plug or wire the existing pigtail, then plug it back in. Being pre-wired for trailers is a great feature on these trucks.
Junior User
Joined: Jan 2010
Posts: 63
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