Best 4-Way Trailer Wiring Kit for 2020 Subaru Outback Wagon

Updated 06/22/2020 | Published 11/19/2019

Question:

I need a 4-way wiring harness for my 2020 Subaru Outback wagon. What's best option? Will it be difficult to install?

asked by: Ron S

Expert Reply:

The best trailer wiring kit we offer for your 2020 Subaru Outback Wagon is the Curt trailer wiring harness part # C56040 as it installs very easily and has the highest amperage rated converter box which allows it to be the most resistant to internal issues caused by trailer wiring shorts.

I attached an install video for this kit for you to check, but basically it plugs into an easy to find port at the rear of the vehicle and you are ready to go! The attached picture shows where you'll find it once you remove a couple interior panels.

expert reply by: Jameson C

click to enlarge

Susty

4/3/2020

On my 2020 Subaru Outback Onyx XT the connection is on the passenger side, not the drivers side as shown in your attached photo. The photo really helped though, thank you very much, as it directed me to the correct area whereas the instructions I had and a different video that I watched indicated a completely different location but apparently correct for a 2019 model.I did use the Curt 56040 making the install plug and play once I found the plug and I did not even have to remove any panels other than the spare tire cover.

Chris R.

4/5/2020

I'm glad you were able to get everything installed without too much trouble. Thanks for the tip about the connector location on the 2020 model!

Tom K.

5/3/2020

I have an 2020 Outback Limited XT and the connector location is neither right or left. In mine, it’s rearward of the spare tire, dead center, under the lip of the entry threshold. Couldn’t be easier!

David M.

6/3/2020

2020 Outback Touring XT connecter is located behind the spare tire (towards bumper), slightly towards passenger side. As mentioned above, super easy no tools needed.

Paul V.

6/18/2020

On the 2020 Subaru Outback Touring XT the connection is back near the tailgate latch. Just pull up the trim and it is taped to the back wall. One problem with this recommended wiring package is that the tail light voltage on this vehicle is 6V instead of 12V since the tail lights are LEDs. This won't activate the relay in the CURT C56040 so we don't have running lights on the trailer with this kit. Is there a relay you sell that we can add that will trigger the running lights using the constant 12V? I can wire it myself but the point of purchasing this recommended C56040 was so that I wouldn't have to wire it myself. Thanks.

Chris R.

6/22/2020

We don't have a separate relay available for this harness. I've honestly not heard of this issue before. We've had a few customers install this on their 2020 Outback without needing any other parts. I would make sure the white wire coming from the harness is securely attached to a clean, bare metal surface. Typically the reason the running lights don't work is a weak ground.