First you will need the 7-Way RV Upgrade Kit # ETBC7L which will connect to the 4-way on your 2024 Toyota Grand Highlander. The kit includes the wiring needed to power the charge line which will allow you to use the Curt Echo Trailer Brake Controller # C51180. This controller can plug in line on a standard 7-way trailer connector and allows you to control the trailer brakes directly from your smart phone using the Curt Echo app. view full answer...
First you will need the Curt T-Connector Vehicle Wiring Harness # C79VV to connect to the factory wiring on your 2024 Toyota Grand Highlander. This will take care of the lighting needed for the trailer which will connect through the 7-Way Kit # ETBC7. This kit also provides you with the wiring needed to install a Trailer Brake Controller # RED52VR.
You can attach the 7-Way to your Receiver # C26VV using one of the No-Drill Brackets # 18140 if you would prefer not to drill into your rear... view full answer...