Yea but the problem is that the Navi unit has to have the software built in to accept the hardware. For example the Navi unit in the HCHII is made by Alpine. Alpine aready has a bluetooth add on option and a Navi Traffic update add on. Each add on plugs into the unit, but the Navi unit has to have the software already installed to run either add on. I doubt that Alpine has pre-loaded the software required to to use these items.