Using your Rally Innovations light bar is straightforward. First, select the driving lights you want to use (they're sold separately). Then, you can easily mount up to 4 lights on the bar. Next, simply bolt the light bar onto your Subaru WRX (2011 - 2014) or STI (2008 - 2014). As for maintenance, regularly check the bolts to make sure they're tight. If the light bar gets dirty, you can clean it with a mild soap and water solution. Avoid using abrasive cleaners as they might damage the textured black powder - coated finish that protects it from rust. And always remember to follow the instructions of your driving lights for proper use.