This is a top - notch headlight adapter harness designed specifically for the 2024 GMC and Chevrolet HD pick - up trucks. It has a part number of LF546H. It fits trucks with a 6.6L Duramax engine. Please note that it's not compatible with High Country, ZR2, or LTZ trucks. Also, Canadian trucks might need to disable the OEM DRL.

Using this headlight adapter harness is quite easy. First, make sure your truck is a 2024 GMC or Chevrolet HD with a 6.6L Duramax engine. Check that it's not a High Country, ZR2, or LTZ model. For Canadian trucks, you may have to disable the OEM DRL before installation. When installing, follow the standard wiring connection procedures. As for maintenance, keep it clean and check the wiring regularly for any signs of wear or damage. If you notice any issues, replace the harness promptly to ensure proper headlight function.