Do you need a switched power supply for a brake controller?
Do you need a switched power supply for a brake controller? Brake controllers should be powered directly from the battery via a circuit breaker. There are two reasons to avoid using a switched power supply; Firstly - you want to retain trailer brakes even if the ignition cuts out unexpectedly. Secondly (on inertia controlled units) - removing power will clear the unit’s calibration. How can I troubleshoot my brake controller system? Third, look at the front of the controller; digital or LED screens commonly display troubleshooting codes. Take note and read up on the codes displayed with references to the...