AEV Aux Switch & Harness Kit for 2024+ GMC Sierra HD

Spec sheet

Collected from 1 supplier page - confirm fit with the supplier before ordering.

If you’re looking to add factory auxiliary switches to your HD Sierra, the AEV Aux Switch and harness kit is your go to solution. Designed to simplify accessory integration, the AEV GM Auxiliary Switch Harness provides OEM-grade wiring and plug-and-play functionality for reduced installation time. Engineered with custom-fit routing, this harness allows for clean, professional installation while utilizing all five factory auxiliary switches. Rated for up to 30 amps and featuring built-in voltage protection, the harness provides a reliable solution for powering aftermarket accessories. Convenient accessory hook-up points are located under the hood, making it easy to connect compatible equipment while maintaining an organized engine compartment. The harness also includes provisions for adding a trailer brake controller on vehicles that were not factory equipped. Key Features Utilizes all five factory auxiliary switches OEM-grade wiring Rated for 30 amps Built-in voltage protection Under-hood accessory connection points Custom-fit design for proper routing Plug-and-play installation reduces installation time Includes open wires dedicated for installing a trailer brake

Suppliers (1)

• American Expedition Vehicles

  AEV Aux Switch & Harness Kit for 2024+ GMC Sierra HD · Orderable · stock unverified

  Checked Nov 5, 2026
  $699.00
  View at supplier

Price history