What Parts Do I Need To Add a 7-Way To A 2024 Toyota Highlander SLE Hybrid
Updated 05/08/2026 | Published 04/29/2026
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Question:
good afternoon. Im needing 7 pin wiring kit for a 2024 Toyota Highlander SLE hybrid. I understand its a trickier set up but I saw e-trailer recommended for a solution.
asked by: LaMar W
Expert Reply:
Hi LaMar,
To add a 7-way plug to your 2024 Toyota Highlander SLE you'll need to use the etrailer Universal Installation Kit for Trailer Brake Controllers part # ETBC7. This kit will give you a functioning 4-way flat and 7-way for towing and includes the 10-gauge wire to connect to the brake line and power, pre-wired 7 and 4-ways, circuit breakers, and a circuit tester to help you find the stoplight switch above the brake pedal. This kit only works if you have a 4-way already installed on your vehicle though. Please be advised, that with a hybrid you should not disconnect the brake light switch unless the battery is disconnected or ignition is in the off position or it may set off a code in the vehicle's computer system. This is important to keep in mind when splicing into the cold side of the brake light switch wire during install.
If your Highlander has a tow package (Has the wiring pre-wired to tow but no 4-way plug) you'll need to use the Curt T-Connector Vehicle Wiring Harness part # C56RV. This harness is designed to plug directly into your vehicle's wiring, no splicing needed, to give you a 4-way flat for lighting functions while towing.
If your 2024 Toyota Highlander SLE doesn't have a tow package you'll need to install the Curt Powered Tail Light Converter w/4-way Flat part # C59496, which is a universal kit that will splice into your vehicle's wiring and is powered directly from the battery to protect from overload and ensuring the trailer lights work perfectly each time you tow. Once your 4-way flat is established, you can use it to add the ETBC7 to wire in a brake controller.
Do you have a brake controller already? I'd be happy to make a suggestion if you still need one!
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
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Lamar W.
5/6/2026
Thanks for the reply. So if I found a little white connector box underneath the bumper does that mean it's wired and I don't need the C59495? I would add a photo if I knew how. Do I only need the ETBC7and C59496? Yes I would need a brake controller sometime. We have a TAB with surge brakes but will be getting a newer camper with trailer brakes.