Recommended Brake Controller for a 2019 Subaru Ascent

Question

Question:

This was my Question below and I have another will I need a brake controller?: I need to change from a 4 pin to 7 pin trailer plug on my 2019 Subaru Ascent. there was a trailer harness plug in in the trunk which I used to install the 4 pin plug. What do I need to buy and do you have installation instructions. Expert Reply: Yes, there is a plug in 7-way connector for your 2019 Subaru Ascent. It is the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector item # 118290. It uses the same connector as the 4-ways. I have linked the installation instructions below.

asked by: Paul M

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Expert Reply:

Yes, you will need a brake controller. To add one to your 2019 Subaru Ascent, I recommend the Redarc Tow-Pro Liberty Brake Controller item # RED24FR. This is a proportional brake controller that activates your trailer's brakes when your Subaru decelerates. It has a unique installation method where the only visible portion is the control knob that's about the size of a nickel. The main unit is hidden away inside your dash to be completely out of the way and out of sight.

If you have the factory tow package you will need two adapters to connect this controller to your Ascent without splicing wires. The first is the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers item # 3062-P this will plug directly into your Subaru's wiring harness.

The second adapter you'll need is the Redarc Tow-Pro Wiring Adapter for Tekonsha Brake Controller Harness item # 331-TPH-017. It will connect the Tekonsha adapter to the Red Arc Liberty Pro item # RED24FR.

The harness you need to install the Brake Controller Adapter item # 3062-P will be located underneath your dash, to left of the steering column, over by the left side kick panel.

I attached a picture below that will show you were to find the connector. If you do not have this plug then you do not have the towing package and will need to use the Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item # RED69FR to complete the installation.

expert reply by: Jerred H

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Plug Location
(click to enlarge)

Answer 1

Over-Under kits are not designed for specific trailers. They are designed for specific axle sizes. Dexter Trailer Springs Over-Under Conversion Kit #K71-384-00 is for 2-3/8 inch axles Dexter Trailer Springs Over-Under Conversion Kit #K71-385-00 is…

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Answer 2

The clearances you mentioned having in your fenders is a bit too tight to be safe when using the 14 inch diameter wheel and tires. The best option is going to be a higher capacity 13 inch radial trailer tire like the #AM10208 which is a size…

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Answer 3

Replacing the rims with larger ones will not necessarily decrease sway. If you're looking to reduce sway you may be interested in the Reese Friction Sway Control Kit #83660. For brackets you'll need either #RP26005 if you have 1-1/4 inch ball…

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Answer 4

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 5

Hey Jeremy, Typically with boat trailers the manufacturer will install hydraulic surge brakes because you don't have to worry about the water damaging wires like you would with electric brakes. That being said, if you use a heat shrink butt…

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Answer 6

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 7

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 8

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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Answer 9

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 10

The first thing you will need for your 1999 D250 is a 4-way. The Curt T-Connector Vehicle Wiring Harness #C55317 plugs into the connection points behind your rear bumper and will allow you to power your trailer's signal lights. Once the 4-way is…

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Answer 11

The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, #HA100400C. This unit connects to the air brakes on…

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Answer 12

You're right, the mounting bracket is unique (in a good way) for the Curt TriFlex NEXT Trailer Brake Controller #C24VV. The bracket is smaller and all you do is put the included adhesive tape on the bracket and stick it wherever you like under…

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