Information on Brake Controller Wiring on a 2005 Jeep Liberty
Published 10/22/2008
Question:
have a 2005 jeep liberty crd with a factory towing package. i need to install a electric brake controller. does not appear to be much information about jeeps in the FAQ section. Appreciate any information
asked by: Ray
Expert Reply:
Which connector does your vehicle have on the rear bumper? If it's the 4 pole flat connector, you'll need the Brake Controller 7 & 4 Way Installation Kit - 10 Gauge, part # ETBC7, hardwired brake controller installation kit.
We have an FAQ brake page that I attached in a link below that will explain the installation procedure.
Your 4 pole connector will plug into the 7 way connector included in the kit, and you will run a brake wire up to the cab for the controller, as well as a 12V feed to the battery via a 40 amp circuit breaker included in the kit.
When installing the controller, the red wire would attach to the cold side of the brake stop light switch, the tester included with the kit will help you identify which stoplight switch wire only shows voltage when the brake pedal is pressed. The blue wire would attach to the brake wire that has been run up from the connector. The white wire would be grounded to the negative battery pole, and the black wire would attach to a 12V power source via the 20 amp circuit breaker included in the install kit.
I attached a link to an installation page below that explains how to wire a vehicle for a brake controller from scratch as well as an FAQ article showing how the ETBC7 kit is used.
If your Liberty has the 7-way connector, the output circuit wire from the 7-way is already ran up under the dash. Look for a light green wire that terminates up under the dash or behind the kick panel on the drivers side. This wire would connect to the blue wire exiting the brake controller. The black 12-volt power supply wire, the white ground wire and the red brake stoplight switch wire would all need to be connected. The install kit # 5506 would work well. The black wire from the controller would connect to the positive battery terminal via the 30 amp breaker included in the kit. The white wire connects to the negative battery terminal and the red wire connects to the cold circuit of the brake stoplight switch. You will need a circuit tester like part # 40376 to probe the various wires exiting the stoplight switch located at the top of the brake pedal. There will be several wires exiting the switch, use the tester to probe each wire until you locate which wire only shows voltage when the brake pedal is pressed. Once located, tap the red wire into that circuit.
Product Page this Question was Asked From
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Vehicle Tow Bar Brake System
- Shop: Vehicle Tow Bar Wiring
- Shop: Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional
- Shop: Base Plate for Tow Bar
- Video: Review of the RoadMaster BrakeMaster Custom Seat Adapter
- Video: The Low-Down on the Blue Ox 7-Wire to 6-Wire, Coiled Electrical Cord
- Video: Hands-On with the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
- Video: Installing the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles on your 2006 Jeep Liberty
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
- Shop: Blue Ox 7-Wire to 6-Wire, Coiled Electrical Cord
- Shop: RoadMaster BrakeMaster Custom Seat Adapter
- Shop: Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Q&A: Parts Needed When Installing Supplemental Braking on 2006 Jeep Liberty
- Video: Roadmaster BrakeMaster System Review
- Video: Roadmaster BrakeMaster System Installation - 2018 Jeep Grand Cherokee
- Shop: Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Proportional
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: How to Measure for Trailer Hitch Drop
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: How to Choose the Right Trailer Hitch Class
- Q&A: What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers
- Q&A: What Wiring and Brake Controller do I Need for My 2005 Ford F-150 with 4 Flat Wiring?
- Q&A: Alternative 7-Way Connector for the Kia R0F67 AC600 on a 2025 Kia Carnival
on Accessories and Parts
