Unfortunately, on the Starcom Dgital, there are only two inputs (Aux and Music 1) for the three devcies (GPS, IPod, Radar Detector). The Starcom owners manual, poorly written, seems to imply that the Radar and GPS should both be sent to the Aux input. My GPS is already on a isolator cable (mono 2.5mm plug at the device end, stereo 2.5mm plug at the Starcom end!) and I am hoping to piggy back the Radar signal on that same cable because even if I send the Radar signal down a separate cable it is going to be combined to go into the same input with the GPS. As the Ipod is not powered by the FJR and, as both the GPS and Radar Detector are, the arrangement seems to make sense to me. The GPS and radar detector should both have priority over the music (though who knows what happens if Gretta Garmin and the dectector both want to talk at the same time). At least one person here on the Forum suggests keeping the radar signal separate and combining the Ipod and GPS signals but, again, the manual suggests otherwise and I also have the power/isolator issue to deal with.