Why Did Toyota Dealer Tell Me My 2020 Toyota Highlander Cannot Have A 7-way Connector Installed?
Updated 06/10/2021 | Published 06/08/2021
Products Featured in This Question
Question:
I was told by my Toyota Dealer Service Dept that the 2020 Highlander does not support the 7 pin plug, only the 4 pin. They told me the 7 pin conversion creates some electrical feed back that can severely damage the cars electrical system. I was told to disconnect my 7 pin conversion, installed professionally, by an after market tow hitch shop. Is this true?
asked by: Caleb
Expert Reply:
The dealer tech you talked to is somewhat correct.
The issue is that the red brake output wire can back feed into the wiring of your 2020 Toyota Highlander, but there is a fix that will fix this.
Your Highlander will need to have a Tekonsha, Draw-Tite, or Redarc trailer brake controller installed, and then you can use the Pigtail Wiring Harness with Diode for Tekonsha and Draw-Tite Brake Controllers # 7865. If you have a Redarc controller you will also need the Redarc Tow-Pro Wiring Adapter for Tekonsha Brake Controller Harness # 331-TPH-017.
This harness has built in diodes that prevent back feeding into the electrical system, and was designed specifically for the Toyota Highlanders.
If you do not currently have a Tekonsha, Draw-Tite, or Redarc trailer brake controller I recommend replacing your current controller with the Tekonsha Prodigy P3 # 90195 as it is an extremely reliable controller with great features like an easy to read LCD screen, and built in diagnostics that are easy to read and understand.
I included videos of the products mentioned for you to take a look at.
Product Page this Question was Asked From
Curt Powered Tail Light Converter w/ 4-Way Flat Trailer Connector and Install Kit
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- Universal Fit
- 4 Flat
- Plug and Lead
- Splice-In
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Shop: Redarc Encapsulated Power Diode for Tow-Pro Brake Controllers
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Video: How to Install the Redarc Tow-Pro Elite Brake Controller with wiring harness on a 2022 Toyota Highla
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional
- Q&A: Which Way Should Diode Point on Highlander for Install of Brake Controller
- Q&A: How Does Redarc Encapsulated Power Diode RED34FR Get Wired To 3rd Brake Light?
- Q&A: Preventing Pre-Collision Warning of 2018 Toyota Highlander After Brake Controller Install
- Q&A: What Wiring do I Need to get My 2022 Toyota Highlander Ready for Redarc Tow-Pro Brake Controller?
- Article: Tow Bar Wiring Overview
- Video: A Closer Look at the Redarc Encapsulated Power Diode for Tow-Pro Brake Controllers
- Q&A: Redarc Tow-Pro Liberty Troubleshooting Light Only Coming On When Brakes Are Applied
- Video: Redarc Tow-Pro Liberty Brake Controller Installation - 2014 Toyota FJ Cruiser
- Video: Installing the Redarc Tow-Pro Liberty Brake Controller on a 2017 Toyota Highlander
- Q&A: Does a 2024 Toyota Highlander Need the Redarc Encapsulated Power Diode for a Brake Controller
- Q&A: Does a 2018 Toyota Highlander Have a Plug In Adapter for a Brake Controller?
- Shop: 30-Amp Circuit Breaker Kit for Redarc Tow-Pro Elite, Classic, and Liberty Trailer Brake Controllers
- Shop: Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob
- Shop: Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob
- Shop: Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob
- Video: How to Choose a Trailer Brake Controller
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Article: Trailer Wiring Diagrams
- Search Results: trailer wiring
- Video: Feature Breakdown: Universal Installation Kit for Trailer Brake Controller
- Shop: Suspension Enhancement
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
on Custom Fit Vehicle Wiring
