Electric Brakes problem

(quoted from post at 09:22:57 09/01/11) Both the 7-pin Pollack RV connector, and the 6-pin connector commonly found on older stock trailers have their own ground wires.

I suspect that grounding wire might be an issue on the utility trailer. It works on the F150 because you're using a different shank and ball that isn't as rusty, and it can get a good ground through the hitch. It works intermittently on the F250 because the shank needs to rattle into just the right position in the truck's receiver to make contact around the rust.

The most likely place for the ground to be a problem is where the white wire attaches to the frame of the trailer.

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(quoted from post at 08:40:30 09/01/11)

(quoted from post at 09:22:57 09/01/11) Both the 7-pin Pollack RV connector, and the 6-pin connector commonly found on older stock trailers have their own ground wires.

I suspect that grounding wire might be an issue on the utility trailer. It works on the F150 because you're using a different shank and ball that isn't as rusty, and it can get a good ground through the hitch. It works intermittently on the F250 because the shank needs to rattle into just the right position in the truck's receiver to make contact around the rust.

The most likely place for the ground to be a problem is where the white wire attaches to the frame of the trailer.

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You hit the nail on the head. If the ground is not complete from the trailer plug to frame and frame to each brake, they will not work. A dead giveaway is at night you can see your lights "blink". That means the hitch is your ground. If you have brakes, the ground needs to be at least a 14 ga wire. Preferably 12 ga. I have had to renew trailer ground connections too.

CT

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(quoted from post at 20:17:43 09/02/11) you will have a lot less trouble if you run thet White wire to the NEG post on the battery.

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