RZY Harness for Plug and Play Tow Mirrors - Silverado & Sierra (2019 1500)

RZY Harness for Plug and Play Tow Mirrors - Silverado & Sierra (2019 1500)

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Sale price $ 94.95

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Choose Your Options:

In addition you will need a modify door harness kit. Would you like to purchase one?
In order to get all of the features working on your 2019 truck you will need both kits. If you select yes here, you do NOT need to order the modify harness on the separate product page.
Is your truck equipped with bed illumination lights?
These are lights that are mounted inside the bed of your truck to illuminate the cargo from within. There is a picture in the FAQ below.
  • Ships within 1 business day

This kit adds the wires required for adding towing mirrors to the cabin for the 2019 1500 Silverado & Sierra trucks. This kit, when combined with our modify door harness will get ALL of the lighting features working properly on towing mirrors. 



2019 Chevy Silverado 1500

2019 GMC Sierra 1500


This harness is designed to work with 2019 Silverado & Sierra 1500.

This harness is only required on model year 2019 and adds the necessary wiring to the cab that is missing to upgrade to towing mirrors. Please note, you must have power adjusting mirrors for this harness to work (glass movement with switch).

This harness adds the turn signal, running light, and cargo light to the body of your truck. You will also need to install the modify door harness kit into the doors.

The features of your original mirrors will work plug and play, as long as you purchase towing mirrors also equipped with those features.

No, we do not currently have an upgrade path for power fold or spot lights.

No! Our harnesses are specially designed to avoid the need for a reflash. Although the GM dealer may tell you it's necessary, it is NOT when using our harnesses.

Take a look in your bed and see if you have them. Those who don't originally have bed illumination require an additional harness (available in the options above).

Yes, at the minimum you will need the modify door harness. The options above will guide you through all of the harnesses you need to purchase to upgrade to towing mirrors.

This harness will fit the 2019 Chevy Silverado and GMC Sierra 1500 trucks. 

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Customer Reviews
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Justin C.
United States United States


Quick install and works great

Edwardo S.
United States United States

Towing mirrors harness

Great product and excellent videos on how to install them. Greatly satisfied!!!

Gage S.
United States United States

Great product !

Straight forward great product

Allen U.
United States United States

Most if it works

Very good directions and easy to follow However my backup spot on mirror does not work and I do have cargo lamps in the bed. Running and blinkers do work.


Boost Auto Parts

Hi Allen, We appreciate your feedback. Our Technical Specialists are standing by ready to help resolve your cargo light in reverse concern. Please give our team a call at 765-831-2830 so we can take a closer look. Thank you, -The Boost Auto Team

Carlos P.
United States United States


Looking at your instructions videos it was easy to complete the job. It works at supposed. All functions in my new towing mirrors works properly. Good quality. Great customer service. Thanks

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