Custom Fit 7-Way Adapter and Brake Controller for a 2021 Toyota Highlander

Updated 03/26/2022 | Published 03/25/2022

Question:

I own a 2021 Highlander xle with trailer package. I want to convert the 4 pin flat plug to a 7 pin round plug to use the battery charger and brake controller. I cant find the part on your site to accomplish this. Please advise. Thanks,

asked by: Richard T

Helpful Expert Reply:

The wiring harness you will need to add a 7-Way vehicle connector to your 2021 Toyota Highlander is the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector item # TK57VR. This wiring harness is custom fit and plugs directly into Highlander's OEM wiring without cutting or splicing. This harness also includes a brake controller adapter for a Tekonsha brake controller.

For a great brake controller I recommend the Tekonsha Prodigy P3 Trailer Brake Controller item # 90195. This is a proportional brake controller that activates your trailer brakes in proportion to your Highlander's braking action. It automatically adjusts the trailer's braking based on deceleration of your vehicle. The brakes activate immediately, there is no pausing like with time-delayed brake controllers.

expert reply by: Jerred H