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Old 10-26-2013, 09:58 PM   #1
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1970 27' Overlander
1989 32' Excella
Bay City , Texas
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Car-Trailer 7way connector 70 Int.27'

When I plugged in connector and applied truck brakes, the exterior running lights on trailer went off. Must be a short. Does the connector at the trailer just pull out. Seemed hard to unplug. Would appreciate advice.
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Old 10-26-2013, 10:10 PM   #2
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1968 30' Sovereign
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Sounds like the plug on the trailer is wired wrong for your truck.Here is the standard wiring diagram for a seven way plug. Trailer Wiring Diagrams | etrailer.com. PO. of the trailer may have wired it for his vehicle which may not have been wired like your truck
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Old 10-26-2013, 10:18 PM   #3
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1970 27' Overlander
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I have used this truck to pull but it's been about three years since the trailer's been towed.
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Old 10-26-2013, 10:48 PM   #4
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1964 26' Overlander
1968 30' Sovereign
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If you have used this truck to pull this trailer then check all your connections, You probably have a ground problem. If the trailer has been sitting that long you may just have corrosion in your plug on the trailer. Spray a contact cleaner into both plugs and put them together and back apart a few times and see if that does anything. If not you probably need to disassemble both connecters and clean them.
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Old 10-26-2013, 11:50 PM   #5
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Car-Trailer 7way connector 70 Int.27'

Greetings capt ken!

It sounds as if your Airstream may still be wired to the 1970 unique to Airstream pattern. What you describe is typical when an Airstream with connector wired to that pattern is connected to a modern tow vehicle with current industry standard RV towing connector. You can check your Airstream's owner's manual for the OEM wiring pattern as well as color/function description for the wiring (also different from current standards). It is a fairly easy job to rewire the trailer's plug to match today's industry standard configuration.

If the Airstream has functioned properly with this tow vehicle in the past, I would highly suspect the possibility of dirt and/or corrosion bridging between terminals in the connector. I had frequent problems with corrosion in the blade style connectors that ended when I made the switch to heavy duty round-pin connectors similar to those utilized in the trucking industry.

Good luck with solving your connector issue.

Kevin
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