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Old 07-14-2015, 07:09 PM   #1
3 Rivet Member
1974 25' Tradewind
Berryville , Virginia
Join Date: Sep 2009
Posts: 155
where is the brake line meant to be connected

I just installed new axles and drums on my 71 Trade Wind and found the brake wire up by the trailer plug but it was not connected. I tied in the wiring from each brake to the brake line runs and checked continuity which I had , so I know I have a complete circuit to all brakes.

I am not sure where this is brake wire is meant to be tied in. I would think it would be one line to the white ground and the other onto the yellow line on the trailer plug connector, which would then activate the power as you brake via the brake controller.

I did a search but didn't have any luck. Any one could point me to the thread which covers this would be helpful. Barry
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Old 07-14-2015, 09:44 PM   #2
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1999 34' Excella
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The brake line you speak of... Is that the one for the "breakaway" switch?
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Old 07-15-2015, 06:37 AM   #3
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1962 19' Globetrotter
Winchester , Ontario
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Yeah, maybe the breakaway. Do not thread the breakaway line thru your chains as some trailer owners do, it totally defeats the purpose.
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Old 07-15-2015, 09:34 AM   #4
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1974 25' Tradewind
Berryville , Virginia
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Posts: 155
Let me further clarify.

I am talking about the trailer plug on the trailer on the interior of the trailer where all the trailer wiring is tied into the trailer plug. Which terminals does the brake line tie into?

I am not talking about the trailer breakaway , which is on the outside of the trailer.
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Old 07-15-2015, 10:01 AM   #5
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Southwestern , Ohio
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I'm not sure I understand the question, but the brake wire goes to pin 2 of the 7-pin connector. Is that what you're looking for?
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Old 07-15-2015, 10:16 AM   #6
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1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
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On your '74 with the outlet for the umbilical cord on the front, and a double female umbilical cord itself you have a different color code and umbilical cord socket than is being used today. Yours will be one with round pins and the "old" Airstream color coding.

I no longer have the information you need, that is pin position and wiring color codes.

Could someone who has the old system information please post that information. I know it has been covered in posts in the past.

To batt, the front outlet on the trailer system was not used by Airstream for a long time and many are not familiar with it, nor the round pin color code system you have, so hold on until we find someone who is.
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Old 07-15-2015, 12:41 PM   #7
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1972 25' Tradewind
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McHenry County , Illinois
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Check your front plug. Mine was a corroded mess. Got a new male/female pair from Vintage Trailer Supply and wired as per this diagram and to the connector in the TV.
Everything worked OK.
Here's the diagram from my '72 service manual.

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