What Wiring do I Need for My Subaru Crosstrek Wilderness Edition to Get a 7 Way on the Back?

Question

Question:

I just put on a Curt hitch I got from you guys on my 20245 Subaru Crosstrek Wilderness Edition I want to install trailer wiring with a round 7 pin connector. The plug in my trunk has 6 pins. What do I need from you guys to make this work?

asked by: George W

0

Expert Reply:

Hello George,

Happy to get you set up with the correct wiring for your 2024 Subaru Crosstrek.

First you are going to want to start off with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118467, this is going to get a 4 flat on the back to control the lights. I attached an image from the install where Ryan points out the plug in the Subaru.

Then you will need to build on top of the 4 flat wiring by install a kit we put together here in house. It is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7. This wiring is going to be a little more work to install than the # 118467 as you will need to run a power line from your battery, install a couple of amps, and run a brake line to the rear of the vehicle. I do not have an install video on a 2024, but I did attach one on a 2015 Subaru so you can see all that in entails.

After you install both sets of wiring you will have a functioning 7 way on the back.

What kind of trailer will you be towing? Do you have already have a brake controller?

expert reply by: Kate F

0

Plug in Subaru for Installing Trailer Wiring
(click to enlarge)

Kate F.

9/8/2025

Hey George, did you have a chance to get the wiring installed on your Subaru Crosstrek? I'm curious to know how it worked out for towing your trailer. Your experience could really help others looking to set up their vehicles for towing.

Reply

Answer 1

Hi V; the B&W Trailer Hitch #BW32PR will fit your 2025 Subaru Crosstrek Wilderness as long as it is not a hybrid. It is compatible with all trim levels of the Crosstrek. What do you plan on using the hitch for?

view full answer...

Answer 2

Hello David, great question. So, there is a chance that you will have to enlarge the access holes for the both the etrailer #e98912 hitch and the EcoHitch #306-X7365. Both hitches come with the same size spacers. The picture below will help…

view full answer...

Answer 3

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Answer 4

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

view full answer...

Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 6

Hello Corey, Great question, and I’m glad you reached out. I do want to let you know that the Buyers Products 2" Hitch Receiver For GM Express/Savana with Cutaway Chassis #3371801102 is designed to fit the 2014 - 2026 GMC Savana Van Cutaway Cab…

view full answer...

Answer 7

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

view full answer...

Answer 8

No, I do not Paul and I doubt Curt or Draw-Tite make anything other than a 4-way for the hybrid model. Aftermarket wiring harnesses for vans are typically limited to 4-way connectors like the item #C63RV for LED lights or the item #C32MJ for…

view full answer...

Answer 9

Hello Dan, We can most definitely get you set up to use your Redarc Tow-Pro Liberty brake controller in your 2022 Toyota Highlander. Since you were looking at the #ETBC7, I’m assuming your Highlander does not have the factory tow package. To equip…

view full answer...

Answer 10

If your trailer has separate turn signals from the brake lights and you want them to remain that way, you will need to use a special converter. On the trailer side, behind the 7-Way, you will attach the Vehicle to Vehicle Taillight Converter,…

view full answer...

Answer 11

If both turn signals blinking at the same time is a new problem that has occurred after the harness had worked fine before, there are a couple of possibilities that may be causing the issue. First, the easiest thing to check are the trailer…

view full answer...

Answer 12

It's probably a bit of corrosion that's on the pins of your trailer wiring connection on the vehicle side which is causing an intermittent at best connection. Typically just taking some sandpaper to the pins of the 4-way will take care of…

view full answer...