7 pin to 4 pin adapter.

[truck trader]

My first 7 to 4 pin adapter fit the truck fine, but my boat trailer and utility trailer 4 pin plugs wouldn’t fit into the adapter. It was way too tight/small. Took it to the dealership and they gave me another. Got home, same issue with the plugs not fitting. Took it back and got a third, it still won’t fit! Went to a friends house to check the plugs on his stuff with 4 pin plugs and they don’t fit either.

The holes are too dang small on three adapters that I’ve tried. Anybody else seen this issue? Why couldn’t they have just put the 4 pin plug on the truck like previous model years? I know I’ll never use that cord thing and other plug that came on the truck. I’ll use the seven pin, but the lower plug is absolutely useless to me.

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[mustanga10]

My first 7 to 4 pin adapter fit the truck fine, but my boat trailer and utility trailer 4 pin plugs wouldn’t fit into the adapter. It was way too tight/small. Took it to the dealership and they gave me another. Got home, same issue with the plugs not fitting. Took it back and got a third, it still won’t fit! Went to a friends house to check the plugs on his stuff with 4 pin plugs and they don’t fit either.

The holes are too dang small on three adapters that I’ve tried. Anybody else seen this issue? Why couldn’t they have just put the 4 pin plug on the truck like previous model years? I know I’ll never use that cord thing and other plug that came on the truck. I’ll use the seven pin, but the lower plug is absolutely useless to me.

I've had similar experiences, I am thinking I am going to try and buy an aftermarket one before I wreck all my trailer wiring plugs.

 

[TNKIRK]

My 502a came with this adapter, in the center console................................

 

[truck trader]

My truck came with one too, it just took two more trips back to the dealer to get one that fit the 4 pin plug. I'm betting Ford will see several issues with these. The 7 pin fits the truck fine, but 4 pin plugs won't fit into the adapter. I wrecked a boat plug and trailer plug before I got one that would actually allow you to plug something into it.

 

[sayers]

Had the same problem, just bought a small utility trailer and tried to use the ford 7 pin, no go had to buy an aftermarket, it fit and worked fine. Any one know what the plug in below the 7 pin is and what it is for. thanks.

 

[Reeltime]

Agree Ford adapter does not work. I bought one at true value hardware. The Hopkins brand did not work, 7 pin would not plug in

 

[charmnh]

Had the same problem, just bought a small utility trailer and tried to use the ford 7 pin, no go had to buy an aftermarket, it fit and worked fine. Any one know what the plug in below the 7 pin is and what it is for. thanks.

My dealer didn't know what it is for. Worrisome.

 

[dhrandy]

Had the same problem, just bought a small utility trailer and tried to use the ford 7 pin, no go had to buy an aftermarket, it fit and worked fine. Any one know what the plug in below the 7 pin is and what it is for. thanks.

It’s for the Smart Trailer Tow Connector. There’s a box that you attach to your trailer and the wire connects there.

For anyone else looking for a 7 to 4 pin, I currently use this one on my Traverse. It works great.
https://www.amazon.com/gp/product/B01M18QTHY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[TNKIRK]

Mine works fine on my box trailer?

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