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Equipping 2017 Subaru Outback and Trailer For Electric Trailer Brakes


Hi, so I have a predicament. Tow vehicle is 2017 Subaru Outback owners manual says max tow is 2700 lbs with trailer brakes. The load is a 900 lbs. trailer with a 1,000 lbs. Polaris RZR. My current trailer does not have brakes and only 2-wire lighting kit. What is my best option to add brakes and will we need to install a brake controller in the Subaru?


Expert Reply:

The owners manual states that trailer brakes should be used if the trailer weight exceeds 1000 lbs.

I'd be happy to recommend parts needed to equip your trailer with brakes, but in order to recommend the correct parts, I'll need more information about your trailer. I'll need to know the following:

• Do trailer spindles have brake mounting flanges?
• What's the tire size and wheel bolt pattern?
• What are the reference numbers from the inner and outer wheel bearings?

I'll link to an article that explains what's needed to add electric brakes to a trailer that doesn't already have them.

You will also need to wire the trailer with a 7-way trailer connector like # e99011, and install a trailer break away kit like # 20400.

Finally, you'll need a brake controller to actuate the brakes. The easiest to install option would be a wireless controller like the Curt Echo, part # C51180. To install a 7-way, you'll first need a functional 4 pole, using # 118467. To upgrade that to a 7-way, use the # ETBC7L kit.

I've linked to some installation videos that you'll find helpful. Get back with me with the information I've requested above, and we'll get you set up.

expert reply by:
Mike L

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