GMC 2020-2023 HD 2500/3500Plug & Play Harnesses

In stock
Regular price $175.00
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6 Month Warranty

Design and Built in the US

100% Sick and Unique Look

This is a plug and play harness, so there is no cutting into your factory headlight harness. Simply unplug your headlight and plug in the plug and play harness and you are done.


  • One Plug and Play Harness
  • Installation Instructions

2020-2023 GMC HD

Frequently Asked Questions

We offer a 6-month warranty on all Sick Diesel light bars, grill lights, accessories, gear, and products. If you’re not satisfied with your purchase, reach out to us, and we’ll get back to you in one business day or less.

Yes! We sell and distribute our products worldwide. For international purchases, Sick Diesel customers are responsible for any additional costs that may occur.

You most definitely can. Our 12-volt LED dimmer controller allows you to adjust the brightness and intensity of your lights to suit your needs. Before completing your purchase, we advise checking the "What is in the package" section of each product page to see if our LED Dimmer Controller is included with your purchase.

As a small, veteran-run operation, we’re all about supporting local businesses. All of our products are designed and custom-made right here in Sarasota, Florida, USA.

No. Smoked lenses don’t affect the color of our lights. Smoked lenses help reduce the glare emitted from traditional vehicle bulb lights, and no discoloration of lights will occur.

The plug-and-play harness plugs into the headlight harness. The plug-and-play harness provides power to the headlights.