How to use: First, make sure your car's engine is off and the battery is disconnected. Locate the old, worn - out wiring harness near the fog lights. Carefully remove the old harness by detaching the connectors. Then, connect the new OEM wiring harness to the fog lamps and turn signal lamps. Ensure all connections are secure. Reconnect the battery and test the lights. Notes: Always follow safety procedures when working with electrical components. Don't force the connectors as it may damage the harness. Maintenance: Check the wiring harness regularly for signs of wear, like frayed wires or loose connections. If you notice any issues, replace the harness promptly to keep your fog lights and turn signals working properly.