How to Add a 7-Way Connector to a 2024 Toyota Sienna

Updated 02/25/2026 | Published 02/22/2026

Products Featured in This Question

Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"

(366)

$194.97

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(34)

$93.65

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3438)

$114.92

Question:

looking for a 4th gen Toyota Sienna wiring harness to tow my small camper with a 7 pin connector...not seeing anything? May buy the woodland edition for the better suspension, it has a 4 pin installed, or possibly a different trim without a tow package. Appreciate any suggestions.

asked by: Suzy E

Expert Reply:

Hey Suzie. To add a 7-Way connector to a 4th generation Toyota Sienna you'll need a 4-way wiring harness like item # C53VV and the Universal Installation Kit item # ETBC7. There is no custom fit 7-way harness and you have to have a 4-way harness installed as well.

The Curt item # C53VV is a custom fit harness that plugs into a factory connector at the rear of your Sienna. It will provide you with a 4-way connector.

The Universal Installation Kit item # ETBC7 includes a pre-wired 7- and 4-way trailer connector that mounts easily at the rear of your Sienna with an included bracket. This kit is designed for use on a vehicle with an existing 4-way flat trailer connector and plugs directly into it. You'll then need to connect a line to your battery and your brake controller.

I've linked a couple of installation videos below so you can see how to get these wiring harnesses installed.

What kind of camper do you have?

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