What is this.

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Jul 15, 2019 | 06:24 PM

Smawgunner

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Joined: Apr 2019

Posts: 58

Likes: 14

From: Columbus, Ohio

What is this.

My truck is already wired for a trailer...both 7 pin and 4 pin. ??? It came with the truck.

Jul 15, 2019 | 06:27 PM

Munkeebutt

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Joined: Nov 2016

Posts: 864

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From: MS

To add aftermarket trailer brake controller

Jul 15, 2019 | 06:27 PM

Greenie 373

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I believe that is for an aftermarket trailer brake controller.
You have a pigtail under the dash that will plug into that harness.

Jul 15, 2019 | 07:14 PM

angelo7

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Joined: Aug 2018

Posts: 868

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From: Florida

I got one and been wondering too. Thank you guys.

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