Using your Perrin cam solenoid covers is easy. First, gather all the hardware included in the package. Before installation, make sure your engine is cool. Carefully remove the old covers if there are any. Then, use the provided hardware to attach the new Perrin covers to the appropriate spots on your Subaru WRX engine. As for maintenance, keep the covers clean by wiping them with a soft cloth. Avoid using abrasive cleaners as they can damage the anodized finish. If you notice any loose parts or damage, refer to the warranty and instructions for guidance. Also, make sure to check the covers periodically to ensure they are still securely in place and providing proper protection for your engine's electrical connections.