Brake problems on my Aljo

[Budman1962]

I have an 06 aljo TT with a brake problem. I can hook it up and adjust the controller and all is fine. Then the next time I hook it up and the brakes will lock up. I have to readjust it all over again. Then the next time I hook it up it is way off again. I got a different pickup and the problem is the same. Then I got a tekansha p2 controller still the same. I installed a new hookup cord on the trailer and inspected all the wiring and magnets on the trailer and all looks good. The only thing I don't know about is the break away switch. Could a problem with the switch cause this constant big change in power settings each time I hook up?

[Boon_Docker]

If the break away switch was always on it would completely drain the battery so there would be no extra voltage going to the brakes.

[Budman1962]

Thanks for the reply. If the controller is not activated the voltage at the magnets should be zero correct? If the controller says 6 volts should all the magnets be getting 6 volts? I did see a replacement break away switch at tractor supply but it has three wires and mine only has 2. you could be on to something. When I checked the wires and magnets I cleaned the brake dust and packed the wheel bearings. Only one trip and there was a lot of new dust.

[westend]

You will need to measure voltage at the brake assemblies. MY WAG is that your emergency break-away switch is always "on" and sending limited voltage to the brakes. When you use the controller, the added voltage locks up the brakes.