Hello again. I finally got a brake controller hooked up to run the brakes
on my 76 boler
. I have a tekonsha p3 controller. When i went to set up the controller it said to manually apply the trailer brakes
to lock up in order to set the voltage correctly. I did this and found only one of my brakes
would lock up. I jacked up the trailer and had my girlfriend manually engage the trailer brakes and they come on strong for approx. 1 second and then fade to almost off after that. This is on the weak side, the other side is strong. The week side makes that humming sound as though the brakes should be functioning. Is the magnet weak? I had the drums off a couple of months ago and everything looked ok, but the trailer sat for a while before i bought it. Thanks to those who can help.