Using these OLM Wide Angle Convex Mirrors is a breeze. Just replace your existing stock mirrors with these new ones as they are direct replacements. You'll instantly notice a big improvement in your visibility. When the weather turns cold and the mirrors start to fog up or frost over, simply turn on the defroster function and the built - in heating element will clear them up. As for maintenance, you can clean the mirrors with a soft cloth and a mild glass cleaner. Avoid using abrasive materials as they can scratch the lens. Make sure to check the connections regularly to ensure the defroster is working properly. With proper use and care, these mirrors will serve you well for a long time.