Utilizing The HIGHEST QUALITY Material In The Industry hidden amplified antenna design for direct replacement covering all am/fm broadcast radio comes with self-adhesive pre-applied on the back of cable require 12-volt power Can be mounted anywhere in your vehicle such as in your glove box, on your dash, in your trunk, in your hatchback, in your rear window. Does not have to be grounded (radio must be properly grounded though). Installation is simple--JUST PEEL AND STICK!! Run antenna cable to back of radio and run power supply wire to a 12 volt power source. The red one is connect with positive pole while the black one is connected with negative pole. Package include:1 x Car Hidden AntennaUnited States