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Old 08-23-2016, 08:04 AM   #1
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Braking system

Columbus Palomino brakes on unit....signal on truck say's check wiring wiring...don't seem to be truck pulled another trailer worked fine...any information would be greatly appreciated..TIA

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Old 08-23-2016, 08:27 AM   #2
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Where is the new wiring ( TV or trailer)? Check wiring on trailer, FR uses wire nuts to connect the brake wiring. These can disconnect and short or open circuit. If you have an ohm meter, check the resistance between the brake pin on the trailer connector and ground. It should be low, but not zero. For single axle trailer resistance should be 2-3 ohms
for double axle trailer resistance should be 1-2 ohms

Check bargman connector for dirty or damages pins.
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Old 08-23-2016, 08:33 AM   #3
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What tow vehicle? What brake controller?
If its an aftermarket controller, did you use the vehicle supplied harness or a custom made one? Start by checking TV brake connection for voltage and go from there.
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Old 08-23-2016, 08:38 AM   #4
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If the brake controller worked on another tailer with brakes it would seem the TV is fine. Like FlyBob mentioned I would check the wiring connections at the trailer, I had a car hauler loose brakes because the brake wire was cut where it exited the conduit because they had not reamed the conduit after cutting. Let us know what you find
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Old 08-23-2016, 05:32 PM   #5
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I occasionally got trailer disconnected messages on our F-150 due to the contacts in the trailer connector having oxidized and spread apart (I also think the F-150 side contacts are slightly undersized). After cleaning and reforming the contacts on the trailer side the problem was corrected.
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Old 08-23-2016, 06:49 PM   #6
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Thanks for all the great info....truck is new GMC Denali harness wiring on 5th wheel
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Old 08-23-2016, 10:51 PM   #7
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I had the same problem. Mine had grease leak that caused lack of braking. Took it to the dealer and was fixed under warranty.
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Old 08-24-2016, 06:26 AM   #8
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Had the same problem happen to us. We purchased a 2015 Chevy PU used and it had a factory supplied RV plug at the bumper and an after market RV plug in the bed. It turned out that the previous owner had used a cheap aftermarket plug that had the connectors that spliced into the existing wires. That unit failed. I replaced it with a Bargman with the proper connectors, taped up the exposed wires, and now everything works fine. Hope your problem is an easy fix.
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Old 08-24-2016, 07:17 AM   #9
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I had that happen a few months ago when bringing home the new trailer. Lights worked and I didn't think to check the brakes until I got about half a mile down the road....didn't have any. Come to find out, the plug just wasn't completely seated.

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