Why do my trailer brakes lock up regardless where my controller is set at?
Jun 12, 2019 at 5:13 PM
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JACOBANDNICKOLAS
AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 POSTS
Welcome to 2CarPros.
The brake controller basically works as a rheostat. The harder the brakes are applied, the more current is sent to the trailer brakes. Is the controller new?