Understanding Trailer Brake Controllers

An electric trailer brake controller is a device thatHazard Flasher issues can be resolved by using a
supplies power from a tow vehicle to a trailer's electricPulse Preventer that will isolate the brake control from
brakes. There are two types of brake controllers onthe vehicles flashers, thus eliminating the pulsing.
the market today - Time Delay Activated and InertiaInertia Activated Brake Controls
Activated.Inertia Activated Brake Controllers or Pendulum Style
While the controllers operate differently, they are verycontrollers are enabled by the depressing of the brake
similar. Both types have the same wiring configuration.pedal and activated by a Pendulum Circuit that senses
Both allow the driver to adjust the amount of brakingthe stopping motion of the vehicle. The Pendulum
power and both have a pressure sensitive manualCircuit applies a proportional voltage to the trailer's
override switch that can be used to apply the trailerbrakes.
brakes independently of the tow vehicle.When the Inertia activated brake control is properly
Time Delay Activated Brake Controlsadjusted, the trailer will decelerate at the same speed
Time Delay Activated or "solid state" controllers areas the towing vehicle. A result of this is increased
enabled by the depressing of the brake pedal in thebraking efficiency and reduced wear on the brakes.
tow vehicle. Once enabled, time delay activatedAdvantages of pendulum style controllers are efficient
controllers apply a gradual voltage to the trailer'sbraking under a variety of braking conditions including
brakes using a Time Delay Circuit.adverse conditions. They also have a smooth braking
The advantages of a solid state brake control unit aremotion.
the inexpensive cost, low profile, and they can bePendulum style controllers have a few disadvantages
mounted at any angle. The disadvantages mostlyalso. They tend to be larger than solid state controller.
pertain to Hazard Flashers issues. In most applicationsThey usually more expensive and they must be
the digital display will flash with the hazard flashers andmounted in a level position. Tekonsha's Prodigy
if the gain is set aggressively, some pulsing of thecontroller is an exception. Due to its innovative
trailer brakes may be felt.technology, it can be mounted in almost any position.