Installing a Tekonsha Primus IQ Brake Controller on 2019 Subaru Ascent

Updated 04/16/2019 | Published 04/14/2019

Products Featured in This Question

Tekonsha Primus IQ Trailer Brake Controller - Up to 3 Axles - Proportional

(2159)

$90.04

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(124)

$40.08

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3399)

$104.49

Question:

My ascent had the trailer hitch installed by the dealership and does not have the connector under the dash. How do I install a connector? The dealer gave me this to install.

asked by: Gene B

Expert Reply:

The photo you sent looks like it may be what you need to hardwire to the Tekonsha Primus IQ Trailer Brake Controller # TK90160 to as a step of the installation.

To install this brake controller in your 2019 Subaru Ascent without the factory tow package you need to start by adding a 4-way, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118790; I have added a link to an installation video of this connector on a '19 Ascent for you to take a look at.

You will also need the Universal Installation Kit for Trailer Brake Controller # ETBC7, which will give you a 7-way connector, circuit breakers and the rest of the hardware needed to install a brake controller like the Primus IQ.

If you take a look at the article I linked for you on installing a brake controller from scratch it goes into the specific details about the exact process. I have also linked a helpful wiring article for you to check out which I recommend reading.

expert reply by: Kyle S