Dual Function (Third Brake Light Bed Cargo & Reverse) Wiring Harness | 2019-2025 Silverado & Sierra

Name: Dual Function (Third Brake Light Bed Cargo & Reverse) Wiring Harness | 2019-2025 Silverado & Sierra
Brand: Boost Auto Parts
SKU: 1844CX
Price: 22.95 USD
Availability: InStock
Rating: 4.846938775 (98 reviews)

Activate your cargo lights integrated into the third brake light automatically when in reverse.

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This will get the center high mount stop lamp (CHMSL) cargo lights on your Silverado or Sierra to work as both a cargo light and a reverse lamp. This will also enable your rear-facing tailgate cargo light (if equipped) to come on in reverse. The truck's cargo lights will also illuminate when you unlock the truck with the key fob at night as a courtesy lamp. The installation is very easy and takes less than 5 minutes while following our installation video.

Important Note: This harness will not activate your tow mirror cargo lights in reverse. If you'd like your tow mirror cargo lights to come on in reverse, you will need to purchase a supplemental cargo and reverse harness HERE.

This product fits the following vehicles (Including T1 New Body Style and Duramax diesel):

Vehicle fitment	Fitment note

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FAQ

How long does this take to install?

This is very easy to install and takes less than 10 minutes to install.

Will the cargo lights come on when I unlock the truck with my key fob?

Yes, as long as it is dark outside. The cargo lights will only illuminate if the ambient light sensor senses that it's dark outside.

Will this activate the mirror cargo lights in reverse?

This modification only activates the center high mount stop lamp and tailgate cargo lights in reverse.

If you would like your mirror cargo lights to be activated in reverse as well first add this to your cart, then add our cargo and reverse harness to your cart by CLICKING HERE. These harnesses can be used in tandem - just stagger the taps on any shared wires.

Can I activate the cargo lights in drive, or only reverse?

This modification only activates them in reverse.

If you would like to have them activated in drive as well first add this to your cart, then add our cargo in drive harness to your cart by CLICKING HERE. These harnesses can be used in tandem - just stagger the taps on any shared wires.