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7-Way Wiring Harness and Brake Controller for a 2017 Subaru Outback Wagon  


Hi - I want to install a 7-pin Wiring connector and a wired brake controller on my 2017 Subaru Outback. What kits would I need to do this? Thanks!


Expert Reply:

To add a 7-way wiring harness to your 2017 Subaru Outback Wagon you will need two separate wiring harnesses. The first is the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118467. This custom-fit T-One connector plugs into your Subaru's wiring harness, which is located in your rear cargo area. If you already have a 4-way connector skip this part. The second harness you will need is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires item # ETBC7. The kit includes a pre-wired 7- and 4-way trailer connector that mounts easily at the rear of your vehicle with an included bracket. This kit is designed for use on a vehicle with an existing 4-way flat trailer connector and plugs directly into it. 

For a wired brake controller you will want the Redarc Tow-Pro Liberty Brake Controller item # RED24FR with the universal installation harness item # RED69FR. This is a proportional brake controller that slows your trailer when your Subaru decelerates or brakes. It activates immediately. It has a unique installation method where the only part visible is the control knob. This allows you to mount the receiver behind your dash so you don't have a bulky controller in your way to bang your knees on.

If you do not already have a hitch I recommend the etrailer item # e98847.

You will also want a ball mount. The Curt Towing Starter Kit for 2" Hitches item # C45534 has everything you will need.

expert reply by:
Jerred H

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