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Old 07-01-2010, 10:47 PM   #1
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1971 27' Overlander
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Question '71 Overlander Brakes locking in reverse.

I'm on my honeymoon right now and we're just north of Mount Rushmore. While we were on the way here I tried to back up the overlander and brakes locked up! I disconnected the umbilical and they released. This happens every single time I try to back up the trailer. Has anyone ever heard of this problem?
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Old 07-01-2010, 10:56 PM   #2
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Originally Posted by Jesse Irwin View Post
I'm on my honeymoon right now and we're just north of Mount Rushmore. While we were on the way here I tried to back up the overlander and brakes locked up! I disconnected the umbilical and they released. This happens every single time I try to back up the trailer. Has anyone ever heard of this problem?
Sounds lie the back up light circuit is also feeding the brakes.

Andy
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Old 07-02-2010, 01:28 AM   #3
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it is possible that your trailer plug or tow vehicle plug is not wired correctly. if the brakes do not activate going forward, the brake and reverse light wires might be reversed.
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Old 07-02-2010, 01:33 AM   #4
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if the reverse light goes on when you hit the brakes in drive, check for a short like andy suggested.

these diagrams might help:
http://www.airforums.com/forums/f238...tml#post115411

the colors at each connector might not match and need to be verified.
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Old 07-02-2010, 09:06 AM   #5
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At least you won't roll backwards If it is the back up lights I would just disconnect that one wire and deal with it when you get home..
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Old 07-02-2010, 09:05 PM   #6
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Thanks everybody. I didn't realize that the color coding changed with a modern 7 pin flat plug. I got that problem resolved. Now I have another one...
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