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Looking For 7-Way Wiring Harness And Brake Controller For 2022 Chevy Express 3500  

Updated 09/08/2025 | Published 06/06/2025

Question:

I am looking for the correct wiring for a 3500 Chevrolet express van. I want wiring that is setup for the necessary power for a brake controller and I want a compatible brake controller. Thanks!

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Expert Reply:

Hello Dan, thanks for reaching out. We have exactly what you are looking for. Assuming your express van currently has no trailer hookup of any kind. Here is what you will need:

- Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55540

- Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7

Those two kits combined contain everything you need to wire you van with both a 4-flat and 7-way trailer connector, including all of the necessary wires for a brake controller. For the controller, the Tekonsha P3 # 90195 is the best, most reliable option.

I have linked a few install videos for you below that you should find useful.

What kind of trailer will you be pulling?

expert reply by:
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Jesse M
ETBC7 Diagram
ETBC7 Diagram
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Jesse M.

9/8/2025

Hey Dan, did the wiring kits and brake controller work out for your Chevrolet van? I'm curious to know how it all came together, as it could help others looking to set up their vans for towing.

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