Metra WM-AK2 500 watt amplifier power wire installation kit. Allows the installation of a after market amplifier and provides all necessary hardware needed to install an after market amplifier. Provides all necessary hardware needed like wire power wire ground wire RCA and remote wire. We at Metra always strive to listen to our customers. You have told us to do a better job at telling the Metra story. For over 70 years Metra has maintained its cutting edge by paying attention to our marketplace and innovating products to fit the needs of the installer.