Posted by IAGary on July 14, 2009 at 03:38:23 from (69.63.1.52):
In Reply to: OT Trailer brakes posted by p55 on July 14, 2009 at 03:18:17:
Can't remember without looking but either the blue wire or the red wire feeds power to the controler.
The opposite wire should register voltage when the controler is activated.
If you have power coming out of the controler then jack up the trailer. Then supply power to the plug on the trailer with a battery charger or directly to a battery to the pin on the trailer that feeds the brakes.Remember to hook up a ground from the battery as well to the trailer.
If the brakes lock up using another battery then you have a wire issue or ground issue at the brake drums.
The brakes ground at the drum like to rust and loose contact.
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