Trailer Brake Controller

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Oct 13, 2008 | 11:29 AM

Blackwaterforge

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From: Alabama

Trailer Brake Controller

I have a 2005 F 450 with the integral brake controller. Has always worked great. Hooked up my trailer this morning (6 horse goosneck) and started down the road and noticed the light that acknowleges trailer is hooked up was not on. Since I was not going far I did not stop to check connection. When I arived at shop and started to back up the brakes locked up and I had to unhook trailer plug in order to back up. Lights all worked fine and I did not notice any brake drag while I was pulling trailer. When I plugged trailer back in I got a Check Trailer light on my dash. All lights work fine. I also hooked another trailer and the lights work fine but I get the Check Trailer signal. When I check lighta at the 7 way receptical on truck everything checks out fine. Any information would be appreciated.

Oct 13, 2008 | 02:32 PM

liv

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From: Kansas City/Breckenridge

I would say there is something wrong with the plug in the back. The wires/plug are pretty exposed and easily fail. I've gone through 3 on my truck. I have never had a trailer brake controller itself fail. You might be better off asking this in the superduty forum though.

If you take it to a trailer shop they can easily diagnose the problem for under 50 bucks.

Oct 13, 2008 | 03:10 PM

UGA33

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From: Cartersville, Ga

This happens to me when i hook up to some trailers. Have you towed this trailer before? Except when it happens to me, i have to redo the wires and put them in the proper place for my truck.

Oct 13, 2008 | 10:07 PM

liv

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From: Kansas City/Breckenridge

Quote:

Originally Posted by UGA33

This happens to me when i hook up to some trailers. Have you towed this trailer before? Except when it happens to me, i have to redo the wires and put them in the proper place for my truck.

Yea that completely went over my head. That would be the most obvious problem is the wiring on your trailer is different than the wiring for your plug.

The wires on the trailer harness should be labeled and I believe there is a wire diagram in the owners manual for the stock plug. Or you can always figure it out with a multimeter.

Oct 14, 2008 | 10:44 AM

UGA33

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From: Cartersville, Ga

To make wiring the trailer up for the truck easier, take a car battery and apply power to all 6 or 7 pins on the connector from the trailer and it will tell you what wires need to be moved where to be compatible with the truck. You can here the brakes click when power is applied to its pin

Oct 14, 2008 | 10:56 AM

Blackwaterforge

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Joined: Feb 2005

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From: Alabama

Thanks for your input!

Thanks for all the input! I bought a 7 to 6 way addapter (assuming they were standard) and the brake and back-up lights were reversed. I changed the addapter wiring and now everything works as it should.
Russell