Trailer Hitch and Wiring for 2021 Toyota Highlander
Updated 02/03/2026 | Published 07/22/2024
Question:
I JUST BOUGHT A 2021 tOYOTA HIGHLANDER IT LOOKS LIKE E75ZR TRAILER HITCH. dO I ALSO NEED THE wiring harness TK99FR ? IS IT POSSIBLE THAT TOYOTAS HAVE A WIRING HARNESS
asked by: Chris M
Expert Reply:
Hi Chris; the etrailer Trailer Hitch Receiver # e75ZR is a great choice and confirmed to fit your 2021 Toyota Highlander. If you don't have a factory hitch there is no way your Highlander already has a factory 4-way installed. The # TK99FR is the correct wiring harness for a 2021 Highlander without the tow package.
I attached some installation videos below for your reference.
Product Page this Question was Asked From
etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Trailer Hitch
- For Towing
- Class III
- 500 lbs TW
- 5000 lbs GTW
- 2 Inch Hitch
- Concealed Cross Tube
- etrailer
more information >
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Robin H.
2/3/2026
Hey Chris, how did things go with the trailer hitch and wiring harness on your Highlander? Were you able to get the # TK99FR harness connected without any issues? Your update could make it easier for others adding towing gear to the same vehicle.