Filter Filters Harmony Audio Hummer Remove All Filters Price Under $50 (3) Condition New (3) Model H2 (2) H3 (1) Hummer H2 2008-2009 Factory Stereo to Aftermarket Radio Antenna Adapter Plug $5.95 Hummer H3 2006-2010 Factory Stereo to Aftermarket Radio Antenna Adapter Plug $5.95 Hummer H2 2003-2007 Factory Stereo to Aftermarket Radio Antenna Adapter Plug $5.95