Firestik Antenna FireStik MU9R18 18-Foot 3-Piece EZ-Install Co-phasing Harness After both leads are at the radio, you simply attach the Y connector to the ends and attach it No coax to process no soldering joints to complete and no tools needed And best of all you get all of the benefits of FireStik's exclusive FireRing connectors. With True Enhanced Performance. Latest Technical Development.