Electronic or electro hydraulic device installed in a tow vehicle used to activate the braking system of the trailer being towed. Controller uses actual braking pressure of the tow vehicle to calculate how much braking force to apply to the trailer. Most after market add-on controllers use a timer or proportional load basis to calculate the amount of brake force required. Since the Ford trailer brake controller is fully integrated into the truck’s onboard computer, this is the first and only controller able to adapt its output based on the status of the Anti-lock Braking System (ABS) to help provide more controlled, stable stops. Trailer brake controller is also fully integrated into the instrument panel design for the convenience of the driver during hookup and operation.