Reese Brakeman Digital Brake Controller Wiring Instructions


The Reese Digital brake controller provides power for up to four trailer brakes. It uses a digital output indicator for precise adjustments by the driver. A brake controller monitors the vehicle's rate of deceleration and brake pedal application to determine how much trailer braking is needed to assist the vehicle. It then provides the power necessary to actuate the trailer's electric brakes. Wiring the Reese Digital brake controller is simple once you know what each wire does.

Things You'll Need

  • Wiring kit
  • Butt connectors
  • Scotchlok connectors
  • Electrical tape
  • Pliers
  • Wire strippers
  • Run the red wire behind the brake pedal and attach to the wire for the brake pedal switch. This is typically a small black box with a switch on one end and a wire on the other. The connection is made by placing one wire in each groove of a Scotchlok connector and closing the gate until it locks.

  • Run the blue wire along one side of the vehicle to the cargo area. Fasten the blue wire to the blue wire for the trailer harness with a butt connector. This works by placing one stripped wire in each end and compressing with pliers. Wrap this connection with electrical tape.

  • Locate the black, round rubber grommet which provides passageway from the driver's foot well to the engine compartment. Cut a small hole in the center with a knife.

  • Guide the black and white wire through this hole. Open the front hood of the vehicle and run the wire along the side to the battery.

  • Strip 1/4-inch of insulation from the ends of the black wire and white wire using wire strippers.

  • Loosen the terminals on the battery and place the black wire under the positive terminal and the white wire under the negative terminal. Refasten the terminal screws.

  • Secure the loose wires with cable ties. Make sure they don't interfere with the driver's controls or operation of the engine.

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