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Trailer Wiring
Thread Starter
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Elder User
Joined: Feb 2005
Posts: 689
Likes: 1
From: South suburb of Chicago
Trailer Wiring
Hey. I have a 2003 F-550 that has a seven? pin outlet. The trailers that I will be towing have the four pin connectors. Is there something that I could do or buy that would allow me to convert the either the trailer or truck.
I also pull these trailers with two F-150s so I would still need the 4 pin for them.
I also pull these trailers with two F-150s so I would still need the 4 pin for them.
Postmaster
Joined: Jan 2005
Posts: 4,743
Likes: 3
From: Peoria, IL
Here you go.
http://www.amazon.com/Hopkins-Simple.../dp/B0002RNSLO
http://www.amazon.com/Hopkins-Plug-S...608026&sr=1-19
If you don't like buying online both of these can usually be found at your local Walmart or auto parts store.
http://www.amazon.com/Hopkins-Simple.../dp/B0002RNSLO
http://www.amazon.com/Hopkins-Plug-S...608026&sr=1-19
If you don't like buying online both of these can usually be found at your local Walmart or auto parts store.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Hoppy makes a plug and play 7 and 4 wire connector, that allows you to have both the 7 and 4 on one block. Or you can use a 7 to 4 converter. Or sence the Ford and Chevy plug is the same you can get the pnp chevy to 4 wire pigtail.
hopkingsmfg.com They make most of the towing electrical hooks you see around.
hopkingsmfg.com They make most of the towing electrical hooks you see around.
Freshman User
Joined: Oct 2004
Posts: 28
Likes: 0
At work we have a truck that only has the 7 pin plug and I was able to purchase an adapter that plugs into the 7 pin socket and has a 4 pin pigtail out the other end. I think I got it at a Pep boys or somewhere similar.
Postmaster
Joined: Jan 2005
Posts: 4,743
Likes: 3
From: Peoria, IL
Yeah the person there probably didn't know what you were talking about. If it isn't too far out of the way I would just stop by some time and look most places have them. The first link in my post is the one I bought cause that gives me the 3 most common trailer plugs. I bought mine at walmart but I have seen it at Advanced auto and Autozone too.
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Post Fiend
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From: Central Florida
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Thread Starter
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Elder User
Joined: Feb 2005
Posts: 689
Likes: 1
From: South suburb of Chicago
Does the six pin connection look like a longer four pin? And then the seven pin connection looks more like a round plug, I'm assuming, because that what the connection looks like on the truck.
here sometimes
Joined: Mar 2003
Posts: 374
Likes: 8
From: Algona ,IOWA
the stock truck plug has 7 blade terminals not pins.I bought my adapter at murrays as the stock flat plug I removed to use the wires for my tool box.They also make an adapter to go from the 7 blade to a 6 pin that also has a 4 flat pin. both of these adapters are simple plug ins.
Postmaster
Joined: Jan 2005
Posts: 4,743
Likes: 3
From: Peoria, IL
This goes in to the 7 blade, or RV connector that your truck should have. It gives you the 6 pin connector and the 4 way flat connector. This is the one I have and it works great and will work with the vast majority of trailers out there.
Last edited by Beerstalker; Mar 22, 2007 at 11:27 PM.
How about this one from Cabella's? It's got everything, plus 2 12v outlets!! I may have to get one just because!!...Brian
Post Fiend
Joined: Feb 2007
Posts: 5,078
Likes: 0
From: Rural WV
I've had the same problem....go to any local dealer that sells utility trailers. They keep adapters in stock because when a guy shows up to buy a trailer, it has to leave the lot with the lights working.
The most I've ever paid for mine ( 7 round to 4 flat) is about 20 bucks.
The most I've ever paid for mine ( 7 round to 4 flat) is about 20 bucks.