Installation of Tekonsha Prodigy P2 Brake Controller # 90885 on 2006 Jeep Liberty With Factory 7-Way

Question:

Im looking to buy and install your 90885 brake control on my subject Jeep thats factory equipped with a 7 pin connector part of optional tow package but has no visible dash connector for the brake control. Do I order with the 5505 or 5506 kit? Will I need to run the blue brake wire back to the 7 pin connector or will that be pre-existing? Will black and white wires need to be pulled through the firewall and connected to the battery or will I find connections in the wiring harness under the dash?

asked by: Mark S

Expert Reply:

To install the Tekonsha Prodigy P2 Brake Controller, part # 90885, on your 2006 Jeep Liberty with a factory 7-Way you will need to hardwire the wires from the back of the brake controller to the vehicle. This vehicle does not have a brake controller port that you can plug the brake controller into. I am including a link to the installation instructions for the Prodigy P2 brake controller.

The four wires on the back of the brake controller are:

White: Ground, attached to the vehicles negative battery terminal.
Black: 12v power lead, attached to the positive battery terminal with a 20 amp or 30 amp circuit breaker. Use the 20 amp breaker if your trailer will typically only have 1 to 2 sets of brakes, or use the 30 amp if your trailer has 3 to 4 sets.
Blue: Electric brakes, attached to the blue electric brake wire on the 7-Way connector at the rear of the vehicle.
Red: Stoplight switch, normally located directly off the vehicle's brake pedal. Attach to the wire on the switch that only has a signal when the brake pedal is pressed.

I am including a link to a FAQ page on brake controller wiring.

Since you have a factory 7-way connector at the rear of your Jeep then you will want to look for a blue (brake controller) wire to be stored up under the drivers side of the dash. It will be taped to the back of another wiring harness. You will run the blue brake output wire from your brake controller to this wire.

The stoplight switch will be underneath the driver side dash as well. I would recommend using a circuit tester, part # PTW2993 to verify which wire on the stoplight switch has voltage when the brake is applied and none when the brake is not being applied. You will attach the red wire from the brake controller to this stoplight switch wire.

Next, you will want to run the black power wire of the brake controller through a 20- or 30-amp breaker to the positive side of your battery and run the white ground wire to the negative side of your battery.

You can use the Draw-Tite Wiring Kit, part # 5506 to connect the black and white wires from the brake controller to the vehicle's battery.

After that procedure you will only need to adjust the Prodigy P2 brake controller, per instructions, to what you will be towing with your Jeep Liberty.