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Old 03-25-2002, 10:19 PM   #1
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1969 27' Overlander
, Michigan
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Electric Brake Wiring

Getting ready to depart for a trip to Florida with our 69 Airstream Overlander. Brakes are only working on one side. Problem is that the wiring on the curb side is disconnected. Easy enough to fix except it is not obvious how to wire them back. The wired side provides no clues. I hope one of you can help.

1. Two white wires lead to the brake magnet.
2. A white and a black wire supply power from the trailer.

I am guessing that polarity is not an issue for proper functioning of the brakes. Only current is required. Is that correct? If not, how does one determine how to hook up + and - ?
I only spent a few minutes under the coach with a flash light, maybe I'm missing something.

Any help from past experience is appreciated.

Thanks

Jim
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Old 03-26-2002, 07:50 AM   #2
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Jim,
I remember Andy from Inland posting that polarity is not an issue.
But do not take my word for it. I am sure Andy will confirm this.
Do your travel plans still allow for a Mystic Springs stop-over?
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Old 03-26-2002, 10:07 AM   #3
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Trailer electric brake magnets are not "polarity" sensitive. However, it is very important that they be wired in parallel, and one side grounded to the trailer frame, as Airstream wires them. Andy
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Old 03-26-2002, 10:40 PM   #4
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Peter, Andy,

Thanks for confirming the polarity issue on the brakes. Now I only hope the temperature breaks the freezing point tomorrow so I can work out there without going numb!

Peter,

With 22 - 24 hours drive time each way we are on a tight schedule. Unfortunately, Mystic Springs is a bit too far west for a convenient stop over on the way back.

I am looking forward to some nice pictures from the rally on this site!

Jim
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