Parts Needed to Install Brake Controller in 2016 GMC Terrain  

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Expert Reply:

To install a brake controller in your 2016 GMC Terrain will require hardwiring since the vehicle did not come pre-wired for installing a brake controller.

You will need to start with a 4-way (if you do not have one). For that you would want the # 118494.

From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well.

For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup.

expert reply by: Jameson C

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