This kit adds the wires required for adding towing mirrors to the cabin for 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.
Link to installation video: https://youtu.be/2PUYxS1Q4YY
Fits 2019 1500 Silverado and Sierra.
Reviews
- Reviews
- Questions

RZY WORKS PERFECT
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

Easy install
Great experience, good instructions video

Awesome company.
This harness was super easy to install. The customer service is also spot on. I had a few questions and either I found the info on their YouTube channel or they got back super quick. Looking forward to doing more business.

'19 1500 tow mirrors
Have not installed yet. But videos seem to make it look like it's going to be straight forward and not an issue. Product quality is spot on!


Great solution!
After being put off by my dealership, I decided to try installing the Boost harness. The installation video was good although my specific install differed slightly. A quick call to Boost's tech support filled in the gaps. The harnesses work as designed. Total installation time for me was about 5 hours.