Using this quick connect harness is a breeze. First, make sure your vehicle is turned off to avoid any electrical issues. Identify whether you have halogen or LED lights and choose the correct part number (529101 for halogen, 529100 for LED). Then, find the headlamp connection point and plug in the harness following the OEM plug - and - play design. That's it! For maintenance, keep the harness clean and dry. Avoid exposing it to extreme temperatures or moisture. If you notice any loose connections or problems with the lighting, check the harness immediately. Always handle the harness gently to prevent damage to the wires.