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Vehicle - trailer connectors

Old 10-10-2019, 03:09 AM
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Question Vehicle - trailer connectors

hey guys, i'm doing research for a business proposal for my university. I was wondering how many of you have had issues with faulty connectors whether that is due to dirt, corrosion or other issues. Any responses would be great!

Thanks!
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Old 10-10-2019, 03:15 AM
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Very few since abandoning 4 pin flat and 5 pin flat connectors on all of my trailers.
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Old 10-10-2019, 03:40 AM
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none since going to the 7 pin RV style plug.
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Old 10-10-2019, 03:51 AM
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I had a bad 7 pin recently and a bad 6 pin the other day. I had to replace the 7 pin adapter and the 6 pin was bad wiring in the tow vehicle.
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Old 10-10-2019, 12:27 PM
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Prevention before water gets to it. Spray it down with corrosionX. If I don't have any handy, I'll grab pb blaster or wd40. I spray the sealed connectors on the outside (not the contacts) with fluid film, just for fun.
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Old 10-10-2019, 01:10 PM
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I've had problems with 7 pin connectors. 2 different trucks, 2 different trailers.

Feel free to improve their design and make a mint!

I assume you mean the light connectors as opposed to the trailer/ball connector.
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Old 10-10-2019, 01:20 PM
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Originally Posted by Brokenline View Post
I've had problems with 7 pin connectors. 2 different trucks, 2 different trailers.

Feel free to improve their design and make a mint!

I assume you mean the light connectors as opposed to the trailer/ball connector.
I’ve found that most of the time the issue with 7 pins is terminating the wires in the plug. A pigtail with a sealed plug terminated in a junction box has worked flawlessly for me. All the wires from the lights terminate there, as does the pigtail. And they are cheap.

BougeRV 7 Way Trailer Plug Weatherproof Trailer Wiring Harness 7 Pin Trailer Connector Enclosed Trailer Accessories with Junction Box for RV Trailers, Campers, Caravans, Food Trucks (8 Feet Long)
Amazon Amazon
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Old 10-10-2019, 01:44 PM
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You know, you're probably right, but... the one I have now is similar to the one you linked, but it has a flat connector that connects to my trailer. I can wiggle the 7 pin plug and get the lights to work, so it's either in it's sealed terminations or the pin prongs themselves.

Always something.
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Old 10-11-2019, 10:37 AM
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Not in a long time. I switched to a 7 pin about 10 years ago.

I had one failure afterwards due to corrosion. Replaced the connector and rewired. Before closing it up, I filled the inside of the connector with dielectric grease. Haven’t had a corrosion related issue at the connector since.
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Old 10-11-2019, 10:49 AM
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I've also added these handy little things to the tongue of all of my trailers. Completely unnecessary, but cheap, and they make sure your plug stays up and out of the dirt, pointed down, when being stored.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
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Old 10-11-2019, 01:08 PM
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My tow vehicle has a 7-way round.

My snowmobile trailer uses the 7 way round so it plugs right into the truck.

The boat has a 5-way flat. I use, and have been using the same 5 way flat to 7 way round since 2007 and have had no issues with either.
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Old 10-12-2019, 09:15 PM
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Had a bad 7 pin last week. Hadn't happened before so I stupidly assumed there was a problem with the wiring.
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