Using this rear fog light is easy. First, lay out all the hardware and the wiring harness. Then, install the lamp and find a good route for the wiring so that water won't get into your vehicle. Plug in the harness and test the functions. The F1 blinking function can be enabled or disabled according to the included instructions. For maintenance, keep the lamp clean. You can use a soft cloth to wipe it regularly. Make sure the wiring connections are tight. If you notice any issues, check the wiring harness and the installation hardware. In foggy conditions, use the parking light function to get extra illumination from the low - mounted lamp.