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#10789242 - 04/22/15 09:32 PM My trailer will not back up.
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 227
Loc: Colleyville, Tx
I drive a 2011 Ford F-150, my trailer is a tandem axle, w brakes and it won't back,up. Other vehicles back this trailer so I'm sure it's my truck. Must be my plug or a fuse.

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#10789355 - 04/22/15 10:08 PM Re: My trailer will not back up. [Re: Texjef84]
Allison1 Offline
TFF Guru

Registered: 12/14/03
Posts: 17619
Loc: Grand Prairie, Tx
Does your trailer harness have 5 wires and surge brakes? One of them is to activate a solenoid to turn off your brakes.

You may need to get another plug on your truck.

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#10789681 - 04/23/15 06:29 AM Re: My trailer will not back up. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 227
Loc: Colleyville, Tx
It should be a factory harness, round on the left, 4 pin rectangle on the right. I believe the boat is a 5 pin, but it has an adapter on it right now. It worked fine on two other vehicles.

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#10789684 - 04/23/15 06:31 AM Re: My trailer will not back up. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 227
Loc: Colleyville, Tx
Adapter I mentioned is a standard flat to round adapter

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#10789758 - 04/23/15 07:28 AM Re: My trailer will not back up. [Re: Texjef84]
2015fordnut Offline
Extreme Angler

Registered: 06/24/09
Posts: 1815
Loc: Garland, TX
Passenger side kick panel fuse box. Fuse #37 10amp Owners Manual page 333.
_________________________



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#10791059 - 04/23/15 01:32 PM Re: My trailer will not back up. [Re: Texjef84]
K.D. Offline
TFF Guru

Registered: 05/04/02
Posts: 13658
Loc: Hurst, TX
In an emergency.......

Unplug the 5 flat connection to on from the truck to trailer..rotate truck plug 90 degrees and plug a different slot into the end slot (blue wire) on the trailer. That is taking a known hot wire and sending power to trailer actuator to release the brakes. If it doesn't work your problem is trailer related, if it does work your issue is between the plug and the truck.

Turn headlights on before backing up with plug set up like this so all wires are hot.


Edited by K.D. (04/23/15 01:34 PM)

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#10798615 - 04/26/15 05:26 PM Re: My trailer will not back up. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 227
Loc: Colleyville, Tx
Well I think the issue is the trailer, don't want to miss fishing right now so I rigged it where it won't lock up and will send it to the shop some other time, thanks for the help

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#10801128 - 04/27/15 03:25 PM Re: My trailer will not back up. [Re: Texjef84]
04champ Offline
TFF Celebrity

Registered: 04/22/15
Posts: 6226
you're missing the 5th wire

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#10802029 - 04/27/15 08:17 PM Re: My trailer will not back up. [Re: Texjef84]
Freeman Clark Online   content
Extreme Angler

Registered: 03/18/05
Posts: 1346
Loc: Temple, Texas
It my be the driver doing the backing.

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#10914396 - 06/13/15 03:38 AM Re: My trailer will not back up. [Re: Texjef84]
stick steering Offline
TFF Team Angler

Registered: 08/06/07
Posts: 4591
Some older trailers did not have a electric bypass I had one that had a slug that fit in the slot in the tounge that kept it from sliding if the hill was to steep

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