How To Install The Curt Spectrum Trailer Brake Controller In A 2022 Subaru Ascent

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Question:

How do I install the curt spectrum trailer brake controller on my 2022 subaru ascent without factory tow package

asked by: Tim A

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Expert Reply:

To install the Curt Spectrum Trailer Brake Controller # C51170 on your 2022 Subaru Ascent without factory tow package you'll need to first install a wiring harness. I recommend the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector # 118290 as it comes with a 7-way and is a simple plug-and-play installation.

Once the the wiring harness is installed you can wire the Universal Wiring Adapter for Curt Trailer Brake Controllers # C51515 that came with your # C51170 into the # 118290. Then you can mount the control module up under your dash so it's out of the way and connect it to the wiring harness adapter. Once that is complete you can mount the control knob wherever fits best and run the wiring from it to the control module.

I've included a video to help walk you through the installation process below.

expert reply by: Kevin C

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Answer 1

It appears as though some of the hybrid models come with an exhaust shield like you described. This will need to be permanently removed for the installation of the etrailer Trailer Hitch Receiver #e75ZR. It should be held in place by a screw and a…

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Answer 2

To tow a small trailer with your 2023 Subaru Ascent, I recommend the etrailer Hitch item #e55ZR. This hitch is custom fit and bolts to your Subaru with included hardware. It is a class III hitch with a 2" receiver so it will be able to max out…

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Answer 3

Hello Dan, I can definitely help with this. It is completely normal for the Curt TriFlex brake Controller #C24VV to show the current gain setting when the brakes are applied, or when the manual override is pressed. It sounds like you have the gain…

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Answer 4

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…

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Answer 5

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…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 8

The main difference between the Curt Trailer Hitch Receiver part #C13416 and the EcoHitch Hidden Trailer Hitch Receiver part #EH97FR is that the EcoHitch has a completely hidden cross tube whereas the Curt cross tube will be visible from the rear of…

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Answer 9

Hi David! There are quite a few hitches offered for your 2026 Honda Odyssey, so I definitely understand wanting to know the differences. There are basically three styles available for you and I have them broken out below: Exposed Crosstube: etrailer…

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Answer 10

Hey Ricardo! Yes, the Curt Trailer Hitch Receiver #C82RJ is the hitch Curt is working on for the new 2027 Telluride. This is a pre-order since Curt hasn't finished the design. It does not include wiring. The wiring harness for the 2027 is also up…

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Answer 11

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 12

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…

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How To Install The Curt Spectrum Trailer Brake Controller In A 2022 Subaru Ascent

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