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Tool Talk Discussion Forum

Corrosion in 7Pin Plug for Trailer

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Bob

08-23-2003 02:49:57




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I have corrosion forming in the connector of my trailer electric plug. What's the easiest way to get rid of it and to prevent it from coming back. Is there a spray I can buy. Looks too hard to try and sand the connections.

Thanks,
Bob




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Dusty

08-25-2003 19:32:26




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
Anti-oxidzing paste/grease that electricians use on aluminum wire works very well.



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Herringchoker

08-24-2003 14:15:54




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
Here in Eastern Canada, with the salty ocean air and heavy use of road salt for winter de-icing, we have lots of problems with corrosion of exposed electrical connections. Many years ago I discovered the cheapest dielectric compound to use on these connections..and it really works. It is white petroleum jelly (Vaseline). I have been using it for over 20 years on battery, alternator, solenoid, and starter terminals and other electrical connections (including 7-pin connectors on tractor - trailers), with no green corrosion if it is thoroughly applied. I even used it on the connections to the Electronic Control Module on a Series 60 Detroit Diesel. I've also used chassis grease on the 7-pin trailer connectors with good results. Something else I've noticed is that a vehicle that is oil undercoated every year (like my 1979 F-100) never has corroded electrical connections underneath.

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Mac

08-24-2003 09:41:57




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
Try the tuner control cleaner you get at radio shack for cleaning. Then use co-ax sealant, or dielectric grease. You might consider a dummy plug for each end with dielectric grease to ward of further corrosion.



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pjw

08-24-2003 05:56:37




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
I had the same problem with my travel trailer. I ended up replacing the plug. Afterwards I got the idea of spraying WD-40 on the male and female plug ends after each use. Not a lot just a quick spray. The current plug is going on 6 years without a problem. And if you have ever had a travel trailer that is a good track record.



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Frank (n.mi.)

08-24-2003 05:52:05




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
I have had some success with a dremel fitted with the little wire brush tip.



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George

08-23-2003 10:12:42




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
When I worked in the electronics industry, we used a contact cleaner/lubricant that worked great to ensure electrical conductivity especially in high vibration and dirty environments. All I remember about it was that it came in a little brown glass bottle and you had to apply the liquid with a Q-Tip -- seems like you could use an eye dropper. You might try an electronics supplier or Radio Shack.

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Farmer/Paul

08-23-2003 03:41:50




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 Re: Corrosion in 7Pin Plug for Trailer in reply to Bob, 08-23-2003 02:49:57  
To get rid of corrosion I give the plug ends a light shot with a small sand blaster to remove oxidation; then a light coat of white grease ( aerosol type).



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Slowpoke

08-24-2003 00:17:24




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 Re: Re: Corrosion in 7Pin Plug for Trailer in reply to Farmer/Paul, 08-23-2003 03:41:50  
There used to be spray cleaner that would remove the green corrosion, but I suppose now it's too dangerous for the environment or people. I've used mine up and don't remember the name.
For internal cleaning, wrap some sandpaper around the back end of a drill bit, cutting side out. For the pins, try a drill bit the same size as the pin and wrap the sandpaper with the cutting side in. Use tape to hold the paper on the drill.

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Jacques

08-26-2003 17:18:45




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 Re: Re: Re: Corrosion in 7Pin Plug for Trailer in reply to Slowpoke, 08-24-2003 00:17:24  
About two hours ago, I bought a new set of connector plugs for my truck and trailer. My truck connector was missing. The two connectors cost $2.89, I think, at the local NAPA store. I plan on soldering the connections. If yours are really corroded, I'd just replace them and use Vaseline or di-electric grease to keep 'em from rusting again.



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