4 flat with 7 round?? - Fiberglass RV


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Old 06-15-2008, 03:09 AM   #1
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Hello everyone
Quick (but very important) question....
My trailer has a flat 4 connector & the tow vehicle has a 7 round. Is there an adapter available or do I have to rewire trailer to 7 round??
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Old 06-15-2008, 06:32 AM   #2
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Hello everyone
Quick (but very important) question....
My trailer has a flat 4 connector & the tow vehicle has a 7 round. Is there an adapter available or do I have to rewire trailer to 7 round??
Yes, there is an adapter, available in both cable style, and solid plastic plug.





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Old 06-15-2008, 09:23 AM   #3
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easily available at walmart or any auto parts store.

Certainly a Princess Auto item for the 'tup northers.
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Old 06-15-2008, 01:42 PM   #4
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Canadian here - I needed the opposite, truck had 4 pin and trailer had 7pin. Canadian Tire did not have the part, Lordco did and they were cheap compared to crappy for all the adapters.
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Old 06-15-2008, 06:05 PM   #5
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Canadian here - I needed the opposite, truck had 4 pin and trailer had 7pin. Canadian Tire did not have the part, Lordco did and they were cheap compared to crappy for all the adapters.

We bought ours [actually had someone make it] at a hitch store. We could not find one at Walmart or AutoZone { local auto parts store}.
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Old 06-15-2008, 06:09 PM   #6
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Canadian here - I needed the opposite, truck had 4 pin and trailer had 7pin. Canadian Tire did not have the part, Lordco did and they were cheap compared to crappy for all the adapters.

I take it you don't need brakes??
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Old 06-15-2008, 06:27 PM   #7
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No, currently I don't need trailer brakes as I have a Toyota xcab 4x4. That trailer (my 1972 trillium) did not have brakes but a previous owner had put on a 7pin adapter.

My 1976 trailer does have brakes and I will get around to putting them into use over the summer. My mechanic says getting the brakes working on an older trailer can be a pain so we haven't delved into it yet.
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Old 06-15-2008, 07:08 PM   #8
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I bought one from Autozone a few weeks ago. I dont remember exactly, but I am sure it was less than $15. When installed, it glows red!
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Old 06-15-2008, 07:36 PM   #9
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When installed, it glows red!
I think you have some wires crossed!
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Old 06-15-2008, 08:49 PM   #10
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I think you have some wires crossed!

I hope not!

It is a red piece of plastic and it has a light in it... so the whole thing looks like it is glowing red.

Of course, I ve yet to hook it up, so it could be waiting to blow! Of course, it will wait until there is a highway patrol car behind me to go out!
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Old 06-15-2008, 10:05 PM   #11
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I was looking at a friend's Land Rover 4x4 and the owner's manual says the trailer towing weight is about 2,000 lbs without trailer brakes and 7,000 lbs with brakes.

Ford says "The brakes are designed to stop the GVWR, not the GCWR".

There's a message here.
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