Using your Rally Innovations Ultimate Light Bar is easy. First, make sure you have the driving lights you want to use (they're sold separately). Then, simply bolt the light bar onto your Subaru Impreza, WRX, or STI from 2004 - 2007. You can mount up to 4 lights on it to improve your visibility while driving. When it comes to maintenance, check the bolts regularly to ensure they're tight. If you notice any signs of rust, you can touch up the powder - coated finish. Keep it clean by washing it with mild soap and water. Remember, this light bar is built specifically for your car model, so don't try to use it on other vehicles. Enjoy safer and better - lit drives with your new light bar!