Recommendation to Install 5-Way Connector on 2018 Toyota Highlander
Question:
Hi - looking to tow a boat trailer needing 5 wires brakes. Need a wiring kit for my new 2018 highlander limited. Already have the tow hitch installed. Recommendations? Thank you
asked by: Mike H
Expert Reply:
It sounds like you are needing to install a 5-Way connector on your 2018 Toyota Highlander, which will allow you to tie the reverse light to the 5th wire to activate the electric lockout on your boat trailer's actuator.
The easiest way to do this will be to first install a 4-Way connector on the vehicle. If your Highlander does not have the factory tow package (that would have a converter under the dash), I recommend the Tekonsha T-One Vehicle Wiring Harness # 118449. If you do have the factory tow package, I instead recommend the Curt T-Connector # 56042. Either harness will install by connecting directly to the built-in ports located behind the driver's-side interior trim panel in your rear cargo area.
You can then just add the Tow Ready 4 Pole to 5 Pole Wiring Adapter # 20036. This will plug right into the 4-Way and convert it to a 5-Way flat to connect with your trailer. The blue wire from the adapter will then be run to the reverse light circuit on your Toyota Highlander. I have attached an installation video that you can also check out.
Products Referenced in This Question
Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 0 - 5 Feet Long
- 4 Flat
- Plug and Lead
- 5 Flat
- Tow Ready
more information >
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- CURT
more information >
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Best Trailer Hitch Receiver For Towing With 2018 Toyota Highlander
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: How To Determine if the 2018 Toyota Highlander Has A Tow Package For Trailer Wiring
- Q&A: How to Determine if a 2018 Toyota Highlander has a Factory Tow Package
- Q&A: Parts Needed to Add Brake Controller to 2010 Toyota Highlander
- Article: Carrying on a Legacy: One Family’s Story of Grief, Growth, and a Global Pandemic
- Q&A: Wiring for Toyota 2010 Highlander with a 7-Way connector for Towing
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: My Trailer Hitch Doesn't Fit
- Q&A: How To Tell If 2015 Toyota Highlander Came With Tow Package For Trailer Wiring Harness
- Article: How to Measure for Trailer Hitch Drop
- Article: How Much Does a Boat and Trailer Weigh?
- Article: Ball Mount Basics: Weight Capacity, Class, and Size