Installing Trailer Brake Controller on a 2010 Jeep Liberty with a Factory 7-Way  

Question:

Expert Reply:

A plug-in brake controller wiring harness is not available for your 2010 Jeep Liberty but if your Liberty has a factory installed 7-Way you will only need isntallation kit # 5506.

What you will do is use the wire included with # 5506 and attach one of the wires (there are 2 bonded wires) to the back of the 7-Way in the 7 oclock position. Then route the wiring under the vehicle, avoiding areas that may pinch or burn the wire, and into the cab. Connect the wire from the 7-Way you ran to the brake controller blue wire.

With the left over wire there are a few more connections to make. Attach the black wire from the kit to the black brake controller wire. And the white wire to the white brake controller wire. Run them through the firewall, either through an existing hole with other wires or by drilling (careful not to drill through anything on the other side).

The black wire will need to go to the circuit breaker included in the kit and then from the circuit breaker to the positive battery terminal. The white wire will go directly to the negative battery terminal. That just leaves one more connection.

The brake controller red wire will need to connect to the cold side of the brake switch located above the brake pedal. You will need a circuit tester such as # PTW2993 to test the brake switch wires. You need the wire that only has power when the brake pedal is pressed. If it shows power at any other time, such as when the headlights or turn signals are on, it is not the correct wire.

I have included some links that should help. The links show a complete hardwire but most of the information also pertains to this type of installation.

expert reply by: Michael H

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