Information on Brake Controller Wiring on a 2005 Jeep Liberty

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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

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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.

expert reply by: Mike L

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Answer 1

For your 2010 Jeep Liberty, I recommend you start with the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector #118554. This will connect to your factory wiring behind your tail lights. Then because you are wanting to run a…

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Answer 2

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Answer 3

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 4

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Answer 5

Class I and Class II hitches both have a 1-1/4 inch receiver opening. The difference is that a Class I hitch has a lower tongue weight rating, usually 200 pounds and a lower towing rating, usually 2,000 pounds. A Class II hitch usually has a tongue…

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Answer 6

Yes, we do. To add a hitch to your 2024 Toyota Grand Highlander, I recommend the Curt Trailer Hitch item #C26VV. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a…

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Answer 7

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Answer 8

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Answer 9

Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi-trailer. If you need to keep the 7-Way semi active on the truck, then you would need to make…

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Answer 10

A tow package for your 2007 Hyundai Santa Fe could be a frame mounted trailer hitch and trailer wiring harness. If you have either or both of those two things you could pretty easily assume you have the tow package. Another option you have is to take…

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Answer 11

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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