Use the RadarMount Mirror Wire Power Cord to charge your detector from your cars rearview mirror plug harness. Made with high-quality materials, it will continue to deliver superior performance each time it is used. It is designed for cars with a powered rearview mirror. The radar detector power cord has a high-quality loomed power cable with extra fuse protection. It allows you to automatically turn your electronics on and off with your car. Pair a mirror wire cable with the mount for the ultimate factory-installed appearance and superior detection range. The Escort power cord will keep your radar working at the highest level. Your rearview mirror circuit has all the power needed to fully activate your detector. It is a handy item to use along with your radar device.