How to Wire in a Brake Controller in a Dodge Ram

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A brake controller is an electronic device mounted in your Dodge Ram's cab that receives a signal from the brake light switch whenever you apply your foot to the brakes. It then sends a signal out through the trailer wiring coupler to engage the trailer's electric brakes. Most brake controllers are adjustable to allow the driver to determine how much braking force is applied.

Things You'll Need

  • Electronic brake controller
  • Dodge Ram brake controller harness
  • Electrician's pliers
  • Barrel crimp connectors
  • Plastic wire ties
  • Drill with driver bits

Wiring a Brake Controller in a Dodge Ram

  • Disconnect the ground cable from the negative battery terminal.

  • Separate the brake controller from the mounting bracket.

  • Use the supplied self-drilling self-tapping screws to mount the bracket to the lower trim panel underneath the steering column. Make sure it is in a location that will not interfere with the proper operation of the gas, brake or clutch and will not be in the way of entering or exiting the vehicle.

  • Connect the brake controller harness to the electronic brake controller using barrel crimp connectors. There will be four wires each separately labeled on the harness. Connect the ground wire to the white wire on controller will attach to the ground on the harness. The red wire on the controller will attach to the lead from the brake light switch. The black wire on the controller will attach to the 12-volt positive line in the harness, and the blue wire will connect to the output line in the harness that sends the signal to the trailer coupler.

  • Mount the brake controller on the bracket.

  • Locate the OEM brake controller connector. It is usually located under the steering wheel to the right of the steering wheel.

  • Connect the brake controller harness to the OEM brake controller connector.

  • Secure the wires underneath the dash with wire ties. Make sure they do not interfere with the proper operation of the gas, brake or clutch pedals.

  • Reconnect the ground cable to the negative battery terminal.

Tips & Warnings

  • Wrap the barrel crimp connectors with electrical tape to prevent them from corroding.

References

  • Photo Credit camophoto; creativecommons.com
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